A and B are together 90 years old.

Question:

A and B are together 90 years old. Five years ago, A was thrice as old as B was. Hence, the ages of A and B five years back would be (x – 5)

years and (85 – x) years, respectively.

Solution:

True

Let the age of A be x yr.

Then, age of S = (90 – x) yr

Five years ago, the age of A = (x- 5) yr

The age of B= 90-x-5 = (85-x)yr

Hence, the ages of A and 8 five years back would be (x – 5) yr and (85 – x) yr, respectively.

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