Question
The ratio of A's age to B's age after 18 years will be
5:6. Seven years ago, the ratio of their ages was 5:7. Find the present average age of A and B.Solution
Let age of A and B after 18 years be 5x years and 6x years respectively.
According to question;
(5x – 25)/(6x – 25) = 5/7
(x – 5)/(6x – 25) = 1/7
7x – 35 = 6x – 25
x = 10
Desired Average = (50 + 60 – 36)/2 = 37 years
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