Q. Walking at the rate of 4 km an hour, a man covers a certain distance in 3 hours 45 minutes. If he covers the same distance on cycle, cycling at the rate of 16.5 km/hr, the time taken by him is :
Answer: 54.55 minutes
Notes: Distance covered on foot $latex = 4\times 3\frac{3}{4}km = 15km&s=1$ ∴ Time taken on cycle $latex = \frac{Distance}{Speed} = \frac{15}{16.5}hour&s=1$ $latex = \frac{15\times 60}{16.5}minutes&s=1$ $latex = 54.55 minutes$ Hence option [B] is correct answer

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