Question
Out of a total journey of 300 km, a man covers part by boat
and rest by bus. The speed of the boat is 30 km/h and the bus moves at 75 km/h. If the man travels 50% of the journey by boat, find the average speed for the trip. (Nearest km/h)Solution
ATQ,
Time by boat = [(0.50 × 300)/30] = (150/30) = 5 hours
Time by bus = [(0.50 × 300)/75] = (150/75) = 2 hours
Average speed = [(Total distance)/(Total time)] = [300/(5 + 2)] = (300/7) ~ 43 km/h
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