The respective ratio between the present age of son, mother, father and grandfather is 2 : 7 : 8 : 12. The average age of son and mother is 27 years. What will be mother's age after 7 years?

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BANK PO Exam (UCO Bank) 2011 click here to view all questions

The respective ratio between the present age of son, mother, father and grandfather is 2 : 7 : 8 : 12. The average age of son and mother is 27 years. What will be mother's age after 7 years?

A40 years

B41 years

C48 years

D49 years

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Correct answre is: 49 years Explanation: According to the question, $\Large \frac{2x+7x}{2}=27$ $\implies \Large 9x = 27 \times 2 = 54$ $\implies x = \frac{54}{9}=6$ Therefore Mother's age after 7 years $= \Large 7x + 7 = 7 \times 6 + 7$ = 49 years Nithin ? answered undefined All Comments

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