If Aman travels with 12.5% less speed of his usual speed, then he will reach 9 minutes late. What is the usual time taken by him?
Answer & explanation
Correct answer: option 1
When distance is same,
ratio of time ∝ $\frac{1}{speed}$
12.5% = $\frac{1}{8}$
Original : New
Speed 8 : 7
Time 7 : 8
the difference = R
We are given that Aman reaches 9 minutes late due to decrease in speed,
Thus, R = 9 minutes
Usual time taken by Aman = 7 x 9 = 63 minutes