a bus covers a certain distance in 3 hours 20 minutes at an average speed of 45 km per hour. how long will it take to cover the same distance at a speed of 36 kilometre per hour?
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Answer:
4 hours and 10 min
Step-by-step explanation:
Certain distance covered in 3 hours and 20 min.
3 hours and 20 min = 10/3 hours
speed = 45km/hr
therefore
distance = speed × time
= 45 × 10/3
= 15 × 10
= 150 km
now the same distance covered with speed 36 km/hr
therefore
time = distance /speed
= 150/ 36
= 25/6 hrs
= 4 hours and 1/6 hours
= 4 hours and 1/6 × 60 min
= 4 hours and 10 min
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