# math

Max is 5 years younger than Michael . 4 years ago the sum of their ages was 25. How old are they ?

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1. present age:
michael ---- x
max ------- x-5

4 years ago:
michael ---- x-4
max ------- x - 9

x-4 + x-9 = 25
2x = 38
x = 19

Michael is now 19 , and Max is now 14

check: 4 years ago , Michael was 15 and Max was 10
was the sum of their ages at that time 25? YES

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posted by Reiny

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