BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

1 . The present age of Noman is thrice the present age of Shamim who is 20. How many years ago was the age of Noman five times that of Shamim?

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Answer: Option B

Explanation:

Lets say, Noman's age was five times of Shamim's age X years ago and their present ages are N and S respectivety.

So, N = 3S = 3×20 = 60 years.

Now, five years ago,

N - X = 5(S - X)

or, 60 - X = 5(20 - X)

or, 60 - X = 100 - 5X

or, 5X - X = 100 - 60

or, 4X = 40

or, X = 10 years