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2/5 of Amy's money was 3/4 of Ben's money. When Ben have Amy $28, both of them would have the same amount of money. How much did Amy have at first?

 Apr 21, 2021
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Assuming you mean when Ben takes 28 from Amy they have the same amount of money:

 

2a/5=3b/4

8a=15b

b+28=A-28

a=b+56

a=15b/8

 

15b/8=b+56

15b=8b+448

7b=448

b=64

 

64+56=$\boxed{\$120}$

 Apr 22, 2021

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