A cyclist covers a total distance of 36 km. After cycling for 2 hours and 30 minutes, he finds that the distance he has covered is 3/5 of the remaining distance. What is his speed in km/hr?
Show answer & explanation
Correct answer: B
Explanation
Given:
Total distance = 36 km
Time = 2 hours 30 minutes = 2.5 hours
Distance traveled = 3/5 of the remaining distance
Let distance traveled = x
Remaining distance = 36 − x
x = (3/5)(36 − x)
5x = 108 − 3x
8x = 108
x = 13.5 km
Speed = 13.5 / 2.5 = 5.4 km/h