Question

2. A car covers first 100 km of his journey at 50 km/h, next 50 km at 40 km/h and last 75 km in 11
Find the average speed of the whole journey.
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Answer 1

Answer:

31.03 km/hr

Step-by-step explanation:

100/50 = 2hr

50/40 = 1.25 hr

75 km in 4hr

Total distance = 100+50+75 = 225 km

Total time = 2 + 1.25 + 4 = 7.25 hr

Average speed = 225/7.25 =  31.03 km/hr