SOLUTION: Hi, I need help with a math problem: The ratio between the ages of John and David is 6:5. In 7 years time the ratio between their ages will be 7:6. How old are they today?

Question 1005487: Hi,
I need help with a math problem:
The ratio between the ages of John and David is 6:5. In 7 years time the ratio between their ages will be 7:6. How old are they today?
Thanks for the help.
- E.S.
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
j and d for ages of JOHN and DAVID

ratio between the ages of John and David is 6:5.

In 7 years time the ratio between their ages will be 7:6

Substitute for j in the 7-years equation.

JOHN'S DAVID'S AGE

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fixed mistake
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