a car moves with the speed of 30km/h for half an hour , 25km/hfor one hour and 40km/h for two hour. calculate average speedof car.
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Hello Mate!
Please refer to attatchment!
Please refer to attatchment!
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speed=30km/h
time=0.5hrs
distance=s*t
=15km
speed=25km/h
time=1hrs
distance=s*t
=25km
speed=40km/h
time=2hrs
distance=s*t
=80km
average speed= total distance/total
time taken
= (15+25+80)/(1+2+0.5)
= 120/3.5
= 34.28km/h.
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