Question 52

Sabrina travelled 8 km/hr on foot and 13 km/hr on cycle. She travelled a distance of 84 km in 8 hours. For how many hours did she cycle?

Solution

On foot speed = 8 km/hr

On cycle speed = 13 km/hr

Average speed = $$84 km \div 8 hours$$ = 10.5 km/hr

Now apply allegation.

So total 8 hours which is divided equally.

By cycle it has travelled 4 hours.

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