Excluding stoppages the speed of a bus is 60 km/h and including stoppages it is 48 km/h. For how many minutes does the bus stop per hour?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 12.
Given:
Excluding stoppages, the speed of a bus is 60 km/h and including stoppages it is 48 km/h
Concept used:
Total stoppage time = (Speed without stoppage - speed with stoppage)/Speed without stoppage --- (1)
Calculations:
Speed without stoppage = 60 km/h
Speed with stoppage = 48 km/h
Using equation (1), we get
Required time = (60 - 48)/60 = 1/5 hour or 12 minutes