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

• let the ages be 5x and 6x yrs ...
  n after y years the ages will b in the ratio 7:8
  hence,(5x+y)/(6x+y)=7/8
  solving this we get y=2x ..
  if we take 5 and 6 to b their original ages then after y=2 years their ages will b in the ratio 7:8..
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