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28. A car travels half of the length of straight linemotion with a speed of 60 km/h. The remainingpart of the distance is covered with speed40 km/h for half of the time of remaining journeyand with speed 20 km/h for the other half of thetime. The average speed of the car for the entirejourney isL)33.(1) 30 km/h(2) 40 km/h(3) 48 km/h(4) 45 km/h

Answer» 28. A car travels half of the length of straight linemotion with a speed of 60 km/h. The remainingpart of the distance is covered with speed40 km/h for half of the time of remaining journeyand with speed 20 km/h for the other half of thetime. The average speed of the car for the entirejourney isL)33.(1) 30 km/h(2) 40 km/h(3) 48 km/h(4) 45 km/h


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