How many servings of cereal in 450-gram box?












2












$begingroup$


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







share|cite|improve this question











$endgroup$








  • 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


















2












$begingroup$


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







share|cite|improve this question











$endgroup$








  • 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
















2












2








2


1



$begingroup$


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







share|cite|improve this question











$endgroup$




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






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited May 4 '16 at 15:02









John

22.7k32450




22.7k32450










asked May 4 '16 at 14:49









Carlos CarlsenCarlos Carlsen

4101616




4101616








  • 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




    $begingroup$
    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












2 Answers
2






active

oldest

votes


















3












$begingroup$

$450$ 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.






share|cite|improve this answer









$endgroup$





















    0












    $begingroup$

    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






    share|cite|improve this answer











    $endgroup$













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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      3












      $begingroup$

      $450$ 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.






      share|cite|improve this answer









      $endgroup$


















        3












        $begingroup$

        $450$ 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.






        share|cite|improve this answer









        $endgroup$
















          3












          3








          3





          $begingroup$

          $450$ 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.






          share|cite|improve this answer









          $endgroup$



          $450$ 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.







          share|cite|improve this answer












          share|cite|improve this answer



          share|cite|improve this answer










          answered May 4 '16 at 15:00









          JohnJohn

          22.7k32450




          22.7k32450























              0












              $begingroup$

              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






              share|cite|improve this answer











              $endgroup$


















                0












                $begingroup$

                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






                share|cite|improve this answer











                $endgroup$
















                  0












                  0








                  0





                  $begingroup$

                  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






                  share|cite|improve this answer











                  $endgroup$



                  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







                  share|cite|improve this answer














                  share|cite|improve this answer



                  share|cite|improve this answer








                  edited Dec 18 '18 at 19:47

























                  answered Dec 18 '18 at 19:41









                  Renee MathesonRenee Matheson

                  11




                  11






























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