Question

Two friends cover a certain distance with 8 km/hr and 10 km/hr. The faster one reaches the destination 15 minutes before the slower one.Find the distance covered to reach the destination.

1. 15 km
2. 10 km
3. 12 km
4. 20 km

Answer 1

Correct Answer - Option 2 : 10 km

Given:

The speed of two friends are 8km/hr and 10 km/hr

Person with the speed of 10 km/hr reaches 15 minutes earlier

Concept used:

Speed = Distance/Time

Detailed solution:

Let the distance be D

According to question,

(D/8) - (D/10) = 1/4

⇒ D/40 = 1/4

⇒ D = 10

∴ Distance covered to reach the destination is 10 km