Question
Present ages of βKβ and βLβ are in the ratio
14:6, respectively. If βtβ years hence from now, βKβ will be twice as old as βLβ, then find the percentage increase in the age of βLβ during this period.Solution
ATQ, Let the present ages of βKβ and βLβ be β14xβ years and β6xβ years, respectively. ATQ; 14x + t = 2 Γ (6x + t) Or, 14x + t = 12x + 2t Or, 2x = t So, required percentage = (2x/6x) Γ 100 = 33.33%
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