Ranjeet drives his car at an average speed of 50 km/hr and reache
| Ranjeet drives his car at an average speed of 50 km/hr and reaches his destination in 8 hours. Rahman covers the same distance in 5 hours. If
Ranjeet increases his speed by 10 km/hr and Rahman increase his speed by 20 km/hr, then what will be the difference in time taken by them to reach their destination?
A. 2 hours 30 minutes
B. 3 hours 40 minutes
C. 23hours 20 minutes
D. 2 hours 40 minutes
Please scroll down to see the correct answer and solution guide.
Right Answer is: D
SOLUTION
Average speed of Ranjeet = 50 km/hr
Time taken = 8 hrs
Distance = 50 × 8 = 400 km
Rahman covers the same distance in 5 hours.
Speed of Rahman =
If Ranjeet increases his speed by 10 km/hr
New speed = 50 + 10 = 60 km/hr
Rahman increase his speed by 20 km/hr = 80 + 20 = 100 km/hr
Time taken by Ranjeet = 
Time taken by Rahman = 
Difference = 
= 2 hrs 40 min
