Question
Ratio of present age of a teacher to that of his student
is 5:1. After 6 years the ratio will become 3:1. What is the difference (in years) in their present ages?Solution
Let present age of teacher and his student be ‘5x’ years and ‘x’ years, respectively. ATQ; (5x + 6)/(x + 6) = 3/1 Or, 5x + 6 = 3x + 18 Or, 2x = 12 Or, x = 6 Desired difference = 5x – x = 4x = 4 × 6 = 24 years
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