Question
The ratio of difference between the present age of A and
B to the present age of B and C is 6:1. 6 years hence, the ratio between the age of A and C is 21:11. If the present age of B is 25% less than the present age of C. find the sum of the present age of A, B, and C?ÂSolution
Let the present age of A, B and C be a, b, and c respectively, As per the question 
                                         x = 4 The present age of A, B, and C are 36 years, 12 years, and 16 years. Sum of A, B, and C = 36+12+16                                 = 64 years
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