Discuss Forum
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?
- A. 3
- B. 3
- C. 3
- D. 3
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
Post your comments here: