Question
A person walks at 5 km/h and runs at 10 km/h. He covers 18 km, and his walking time is twice his running time. Find the total time taken.
Solution
ATQ, Let running time = t hours, walking time = 2t hours Distance = 10t + 5*(2t) = 10t + 10t = 20t 20t = 18 ⇒ t = 0.9 h Total time = 3t = 2.7 h = 2 h 42 min Answer: 2 hours 42 minutes
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