Paper 1 · Mathematical Reasoning and Aptitude
Excluding stoppages, the speed of a bus is 54 kmph, and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
A9
B10 ✓ Correct
C12
D20
Correct answer: (B) 10 — The bus stops for 10 minutes per hour, so that is the answer.
Explanation
★The bus stops for 10 minutes per hour, so that is the answer.
★Without stoppages the bus covers 54 km in an hour, but with stoppages only 45 km.
★So the stoppages cost it 54 minus 45, which is 9 km of distance.
★At its running speed of 54 kmph, 9 km takes 9 divided by 54 of an hour.
★That is one-sixth of an hour, which is 10 minutes.
★So the bus stops for 10 minutes per hour.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Shared by Mcqkart · via Mcqkart.in