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31-01-2018
Mathematics

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Ann and Betty together have $60. Ann has 9$ more than twice betty’s account. How much money does each have

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31-01-2018

A + B = 60
A + 9 = 2B

re-write
A + B = 60
A - 2B = -9
--------------subtract
3B = 69
B = 23

A + 23 = 60
A = 60 -23
A = 37

answer
Ann: $37
Betty: $23

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