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Lynne bought a bag of grapefruit, 1 1/8 pounds of apple, and 2 3/16 pound of bananas. the total weight of her purchase was 7 1/2 pound. how much did the bag of grapefruit weight?

 Mar 7, 2016
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 ?? grapefruit, 1 1/8 pounds of apple, and 2 3/16  lbs of bananas    total wt.  =  7 1/2  lbs

 

OK.... let's get the weight of the apples and bananas  =

 

1 1/8  +  2 3/16    

 

1 1/ 8   =  9/8       and 2 3/16   =  35/16

 

So

 

9/8  +  35/16     getting a common denominator  of 16, we have

 

18/16 + 35/16   =   53/16 total lbs. of apples and bananas

 

So.....the weight of the grapefruit =  total weight  - weight of apples and bananas ....so we have

 

7 1/2   -  53 / 16  

 

15/2  -   53/16       get  a common denominator of 16

 

120/16  - 53/16  = 

 

67 / 16   =

 

4 3/16  lbs of grapefruit

 

 

cool cool cool

 Mar 7, 2016

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