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1. A person travels a distance of 25 km at a speed of 75 km/hr and then comes back at twice the speed. How many minutes did he take in total?
- A. 20
- B. 20
- C. 20
- D. 20
Answer: Option D
Explanation:
75 km/hr means,
Travelling 75 km takes 60 mins
So, Travelling 25 km takes (60×25)/75=20 mins
As he comes back at twice speed so it takes half time and that is 10 mins
So, minutes in total=20+10=30
(ans)
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