SOLUTION: The ages of two friends is in the ratio 5:6. After how many years will the ages be in the ratio 7:8

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Question 337132: The ages of two friends is in the ratio 5:6. After how many years will the ages be in the ratio 7:8
Answer by Fombitz(13828) About Me  (Show Source):
You can put this solution on YOUR website!
%285%2BX%29%2F%286%2BX%29=7%2F8
8%285%2BX%29=7%286%2BX%29
40%2B8X=42%2B7X
X=2
In two years.