Question
Sum of present ages of A and B = 56. Four years ago,
their ages were in ratio 7:5. Find A’s age 6 years from now.Solution
Four years ago: A = 7x, B = 5x. Now: 7x + 4 + 5x + 4 = 56 ⇒ 12x = 48 ⇒ x = 4. A now = 7×4 + 4 = 32. A after 6 years = 38.
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