Answer:
10 minutes
Step-by-step explanation:
Given:
Given:Speed of bus excluding stoppages =54 km/h
Speed of bus including stoppages = 45 km/h
To calculate: Minutes/per hour the bus stopped = ?
Distance covered by bus without stopping =54 km/h
Distance covered by bus with stopping =45 km/h
Due to stoppages it could
9km (54-45km) less
Time taken to cover 9 km=?
time \: taken \: = \frac{distane}{speed }timetaken=
speed
distane
Distance=9km
Speed = 54km/h.
Substituting given values on the above formula we get,
time \: taken \: = \frac{9}{54} hour = \frac{1}{6} hour \:timetaken=
54
9
hour=
6
1
hour
=10 minutes
Hence,the correct answer is 10 minutes.