The respective ratio of the present ages of a mother and daughter is 7 : 1. Four years ago the respective ratio of their ages was 19:1. What will be the mother's age four years from now ?

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BANK PO Exam (SBI) 2010 click here to view all questions

The respective ratio of the present ages of a mother and daughter is 7 : 1. Four years ago the respective ratio of their ages was 19:1. What will be the mother's age four years from now ?

A42 years

B38 years

C46 years

D36 years

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Correct answer is: 46 years Explanation: Let the present ages of mother and daughter be x and y respectively. $\frac{y}{x}=\frac{1}{7} \implies x= 7y$ $\frac{y-4}{x-4} = \frac{1}{19} \implies 19y - 76 = x - 4 \implies x = 19y - 72$ $\implies 7y = 19y - 72 \implies y = \text{6 and x }= 42$ Age of mother 4 years from now = 42 + 4 = 46 Nithin ? answered undefined All Comments

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