7 yr ago, the ages of A and B were in the ratio 4 : 5 and 7 yr hence, – McqOptions

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1.	7 yr ago, the ages of A and B were in the ratio 4 : 5 and 7 yr hence, they will be in the ratio 5 : 6. The present age of B is ?
A.	56 yr
B.	63 yr
C.	70 yr
D.	77 yr
Answer» E.

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