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A ear travels 30 km at a uniform speed of 40 km/h and the next 30 km at a uniform speed of 20 km/h. Find the average speed |
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Answer» : speed to cover 30 KM = 40 km/ htime TAKEN = 3/4 hspeed to cover 30 km = 20 km/htime taken = 1/2 H average speed = 30 + 30/3/4 + 2/3= 26whole 2/3( ans ). |
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