How many servings of cereal in 450-gram box?
$begingroup$
I am helping my brother with his math again - I need a way to explain this to him!
I am ages past this and don't have the time to find an explanation and figured that asking here would be quicker.
The question is: A 450-gram box of cereal gives the servings as $frac{3}{4}$ of an ounce. How many servings are in the box?
The answer book gives 24 servings as the answer, but does not explain why or how!
Would someone care to explain it to me, briefly? Thanks a ton for your time!
What I have tried - 1 ounce = 28.35 grams
I need to find $frac{3}{4}$ of an ounce $=$ $frac{28.35}{4}$ $=$$7.0875$ grams = $frac{1}{4}$ ounce. * 3 = $21.2625$ = $frac{3}{4}$ ounce.
Then this is where I get stuck.
ratio
edited May 4 '16 at 15:02
John
22.7k32450
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
$endgroup$
add a comment |
$begingroup$
I am helping my brother with his math again - I need a way to explain this to him!
I am ages past this and don't have the time to find an explanation and figured that asking here would be quicker.
The question is: A 450-gram box of cereal gives the servings as $frac{3}{4}$ of an ounce. How many servings are in the box?
The answer book gives 24 servings as the answer, but does not explain why or how!
Would someone care to explain it to me, briefly? Thanks a ton for your time!
What I have tried - 1 ounce = 28.35 grams
I need to find $frac{3}{4}$ of an ounce $=$ $frac{28.35}{4}$ $=$$7.0875$ grams = $frac{1}{4}$ ounce. * 3 = $21.2625$ = $frac{3}{4}$ ounce.
Then this is where I get stuck.
ratio
edited May 4 '16 at 15:02
John
22.7k32450
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
$endgroup$
1
$begingroup$
That is fine and gives $450/21.2625=21.16$, so answer $21$ servings. The answer book is wrong. You can get other answers for other kinds of ounces, but not $24$.
$endgroup$
– almagest
May 4 '16 at 14:59
add a comment |
$begingroup$
I am helping my brother with his math again - I need a way to explain this to him!
I am ages past this and don't have the time to find an explanation and figured that asking here would be quicker.
The question is: A 450-gram box of cereal gives the servings as $frac{3}{4}$ of an ounce. How many servings are in the box?
The answer book gives 24 servings as the answer, but does not explain why or how!
Would someone care to explain it to me, briefly? Thanks a ton for your time!
What I have tried - 1 ounce = 28.35 grams
I need to find $frac{3}{4}$ of an ounce $=$ $frac{28.35}{4}$ $=$$7.0875$ grams = $frac{1}{4}$ ounce. * 3 = $21.2625$ = $frac{3}{4}$ ounce.
Then this is where I get stuck.
ratio
edited May 4 '16 at 15:02
John
22.7k32450
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
$endgroup$
I am helping my brother with his math again - I need a way to explain this to him!
I am ages past this and don't have the time to find an explanation and figured that asking here would be quicker.
The question is: A 450-gram box of cereal gives the servings as $frac{3}{4}$ of an ounce. How many servings are in the box?
The answer book gives 24 servings as the answer, but does not explain why or how!
Would someone care to explain it to me, briefly? Thanks a ton for your time!
What I have tried - 1 ounce = 28.35 grams
I need to find $frac{3}{4}$ of an ounce $=$ $frac{28.35}{4}$ $=$$7.0875$ grams = $frac{1}{4}$ ounce. * 3 = $21.2625$ = $frac{3}{4}$ ounce.
Then this is where I get stuck.
ratio
ratio
edited May 4 '16 at 15:02
John
22.7k32450
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
edited May 4 '16 at 15:02
John
22.7k32450
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
edited May 4 '16 at 15:02
John
22.7k32450
edited May 4 '16 at 15:02
John
22.7k32450
edited May 4 '16 at 15:02
John
22.7k32450
22.7k32450
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
asked May 4 '16 at 14:49
Carlos CarlsenCarlos Carlsen
4121516
4121516
1
$begingroup$
That is fine and gives $450/21.2625=21.16$, so answer $21$ servings. The answer book is wrong. You can get other answers for other kinds of ounces, but not $24$.
$endgroup$
– almagest
May 4 '16 at 14:59
add a comment |
1
$begingroup$
That is fine and gives $450/21.2625=21.16$, so answer $21$ servings. The answer book is wrong. You can get other answers for other kinds of ounces, but not $24$.
$endgroup$
– almagest
May 4 '16 at 14:59
1
1
$begingroup$
That is fine and gives $450/21.2625=21.16$, so answer $21$ servings. The answer book is wrong. You can get other answers for other kinds of ounces, but not $24$.
$endgroup$
– almagest
May 4 '16 at 14:59
$begingroup$
That is fine and gives $450/21.2625=21.16$, so answer $21$ servings. The answer book is wrong. You can get other answers for other kinds of ounces, but not $24$.
$endgroup$
– almagest
May 4 '16 at 14:59
add a comment |
2 Answers
2
active
oldest
votes
$begingroup$
$450$ grams is about a pound. (I think it's closer to $454$ grams.)
So doing the ratio gives
$$16 text{ ounces} times frac{1 text{ serving}}{3/4 text{ ounce}} = 21 text{ servings and change.}$$
I think you're right, and the answer key is wrong.
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
$endgroup$
add a comment |
$begingroup$
You need to change grams to ounces.
450 grams=18 ounces.
3/4=.75
18 divided by .75
= 24ounces.
The answer key is right.
Cheers,
Renee Matheson
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
$endgroup$
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "69"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f1771404%2fhow-many-servings-of-cereal-in-450-gram-box%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
$450$ grams is about a pound. (I think it's closer to $454$ grams.)
So doing the ratio gives
$$16 text{ ounces} times frac{1 text{ serving}}{3/4 text{ ounce}} = 21 text{ servings and change.}$$
I think you're right, and the answer key is wrong.
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
$endgroup$
add a comment |
$begingroup$
$450$ grams is about a pound. (I think it's closer to $454$ grams.)
So doing the ratio gives
$$16 text{ ounces} times frac{1 text{ serving}}{3/4 text{ ounce}} = 21 text{ servings and change.}$$
I think you're right, and the answer key is wrong.
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
$endgroup$
add a comment |
$begingroup$
$450$ grams is about a pound. (I think it's closer to $454$ grams.)
So doing the ratio gives
$$16 text{ ounces} times frac{1 text{ serving}}{3/4 text{ ounce}} = 21 text{ servings and change.}$$
I think you're right, and the answer key is wrong.
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
$endgroup$
$450$ grams is about a pound. (I think it's closer to $454$ grams.)
So doing the ratio gives
$$16 text{ ounces} times frac{1 text{ serving}}{3/4 text{ ounce}} = 21 text{ servings and change.}$$
I think you're right, and the answer key is wrong.
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
answered May 4 '16 at 15:00
JohnJohn
22.7k32450
22.7k32450
add a comment |
add a comment |
$begingroup$
You need to change grams to ounces.
450 grams=18 ounces.
3/4=.75
18 divided by .75
= 24ounces.
The answer key is right.
Cheers,
Renee Matheson
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
$endgroup$
add a comment |
$begingroup$
You need to change grams to ounces.
450 grams=18 ounces.
3/4=.75
18 divided by .75
= 24ounces.
The answer key is right.
Cheers,
Renee Matheson
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
$endgroup$
add a comment |
$begingroup$
You need to change grams to ounces.
450 grams=18 ounces.
3/4=.75
18 divided by .75
= 24ounces.
The answer key is right.
Cheers,
Renee Matheson
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
$endgroup$
You need to change grams to ounces.
450 grams=18 ounces.
3/4=.75
18 divided by .75
= 24ounces.
The answer key is right.
Cheers,
Renee Matheson
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
edited Dec 18 '18 at 19:47
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
answered Dec 18 '18 at 19:41
Renee MathesonRenee Matheson
11
11
add a comment |
add a comment |
Thanks for contributing an answer to Mathematics Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f1771404%2fhow-many-servings-of-cereal-in-450-gram-box%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
$begingroup$
That is fine and gives $450/21.2625=21.16$, so answer $21$ servings. The answer book is wrong. You can get other answers for other kinds of ounces, but not $24$.
$endgroup$
– almagest
May 4 '16 at 14:59