A car moves 30 km at uniform speed of 60 km/h and the next 30 km at a uniform speed of 40 km/h find the total time taken by the car
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distance [1] = 30km
speed [1] = 60km/h
distance[2] = 30km
speed[2] = 40km/h
therefore, in case [1] in case[2],
t= d/s t=d/s
= 30/60= 1/2h = 30/40 = 3/4h
total time taken by the car= 1/2+3/4
= 5/4 hr
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