Question
Three years from now, Aman's age
will be 80% greater than what it was five years ago. The average of Aman's current age and Bishnu's current age is 21 years. What will be the ratio of their ages one year from now?Solution
ATQ,
Let the present age of ‘Aman’ = ‘x’ years According to the question, (x + 3) = 1.8 × (x – 5) Or, x + 3 = 1.8x – 9 Or, x = 12 ÷ 0.8 = 15 Sum of present ages of ‘Aman’ and ‘Bishnu’ = 21 × 2 = 42 years So, present age of ‘Bishnu’ = 42 – 15 = 27 years So, required ratio = (15 + 1):(27 + 1) = 16:28 = 4:7
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