Question

5. A girl covers 40 km at a speed of 10 km/h by bicycle, 25 km at a speed of 5 km/h on foot and
another 100 km at 50 km/h by bus. Find her average speed for the whole journey.
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Answer 1

Step-by-step explanation:

Let distance from A to B be x

Time for travel from A to B= x/20

Time for travel from B to A= x/30

Hence,speed for total distance 2x is: 30x+20x2x=5x2x×60=24 km\hr

Answer 2

Answer:

the answer is

24km/h

correct