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(Solved): 4. A car travels up a hill at a constant speed of 37km/h and reaches the top in 3.5 min . Then it de ...
4. A car travels up a hill at a constant speed of 37km/h and reaches the top in 3.5 min . Then it descends at a constant speed of 66 km/h and reaches the starting point in 2 min . Calculate the average speed for the whole journey
