A car takes 10 hrs to cover a certain distance at a speed of 40km/h. Find the time taken if its speed is increased by 10km/hr.
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Answer:
Time = 10 hrs
Speed = 40 km/hr
Distance = speed × time = 10×40 = 400 km
The distance remains same.
Now, speed is increased by 10 km/hr, so new speed = 40+10 = 50 km/hr
Distance = 400 km
Time = distance /speed
Time = 400/50 = 8 hrs
The car will take 8 hrs if the speed is increased by 10 km/hr.
#WMK
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