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ATQ, Let the present ages of 'Q' and 'P' be 5x years and 3x years respectively According to the question, 5x – 3x = 8 Or, x = 4 years Required ratio = (5x + 8)/(3x + 8) = 7:5
A sum of money doubles itself in 8 years at simple interest. In how many years will it become four times itself at the same rate of interest?