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Five years ago, the average age of A, B, C and D was 45 yr. with E joining them now, the average of all the five is 49 yr. How old is E?

a) 45 years
b) 25 years
c) 64 years
d) 40 years

Answer: a
Explanation: Total present age of A, B, C and D
= (45 × 4) + (4 × 5)
= 200 years
Total age present age of A, B, C, D and E
= 49 × 5
= 245 years
So, Age of E = 45 years

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