Question

.A) A car travels 100 km distance such that 50 km distance with the speed of 80 km/hour, find the speed of the car for the remaining 50 km if average speed of car is 50 km/hour.
B) A body covers total distance z such that first one fourth of distance of z with the speed of 10 km/h, second one fourth of distance z with the speed 20 km/h, third one fourth of distance z with the speed of 30km/h and last one fourth of distance z with the speed 40 km/h. find the average speed of body.

Answer 1

Answer:

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