Let my age 14 years ago be x years My grandfather’s age at that time = 7xyears My present age = (x+ 14) years My grandfather’s present age = (7x+ 14) years 2(x+ 14 + 7) = (7x+ 14 + 7) 2x+ 42 = 7x+ 21 5x= 21 x = 21/5 Seven years ago, ratio of ages => (x+14-7)/(7x+14-7) = (x+7)/(7x+7) => (21/5+7)/(7× 21/5+7) = (56/5)/(182/5) = 56: 182 => 4:13
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