Question
A man starts his journey from point ‘P’ to point
‘Q’. He covers (1/5)th of the total distance in 2 hours and the rest in 8 hours. If he takes 10 hours to return to point ‘P’ from point ‘Q’, then determine his average speed for the complete journey if the distance between ‘P’ and ‘Q’ is 50 km.Solution
ATQ,
Average speed = total distance covered ÷ total time taken
Total time taken = 2 + 8 + 10 = 20 hours
Total distance covered = 50 × 2 = 100 km.
Required average speed = 100/20 = 5 km/h
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