Correct Answer - Option 3 : 12
Given:
Speed of bus = 45 km/hr
Distance covered by bus in 1 hour including stoppages = 36 km
Calculation:
Time taken to cover 45 km = 60 mins
So, Time taken to cover 36 km = (60/45) × 36 mins
⇒ 48 mins
Bus stopped for = (60 – 48) mins
⇒ 12 mins
∴ The bus stopped for 12 mins in an hour