Question
The present age of Preeti is twice Ruchi’s present
age. Six years ago, their average age was 15 years. What will be the Preeti’s age after five years?Solution
Let Ruchi’s present age be x. Preeti’s present age be 2x. Six years ago, their average age, [(x-6) + (2x-6)]/2= 15 3x – 12 = 30 x = 14 Preeti’s age after 5 years = 2x + 5 = 2 × 14 + 5 = 33 years.
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