Question
The present age of A is double of B's present age. C's
present age is 3/5th of A's present age. Average age of A, B and C is 28 yrs. Find the present age of B.Solution
ATQ: A = 2B--------(i C = 3A/5 ------------(ii Also given that: A + B + C = 28×3 From (i), value of B = A/2 A + A/2 + 3A/5 = 84 (10A + 5A + 6A)/10 = 84 21A/10 = 84 A = (84 × 10)/21 = 40 Present age of B = 40/2 = 20
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