Question:Three years ago, the average age of A ,B and C was `27` year and that of B and C, `5` years .A ,s present age is : 

A `30 yrs` 
B `35 yrs` 
C `40 yrs` 
D `48 yrs` 

+ Answer
C 

+ Explanation
present ago of ( A + B + C)

`= (27 xx 3 + 3 xx 3)`

`= 90 years`

present ago  of (B + C)

`= (20 xx 2 + 2 xx 5)`

`= 50 years`

`:. A,s present age

`= (90 - 50) years`

`= 40 years`

+ Report

Irin Moni

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