The total ages of A, B and C at present is 90 years. Ten years ago the – McqOptions

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1.	The total ages of A, B and C at present is 90 years. Ten years ago the ratio of their ages was 1 : 2 : 3. Then the present age of B is .... ?
A.	30 years
B.	20 years
C.	40 years
D.	None of these
Answer» B. 20 years

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