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1. How long will a boy take to run round a square field of side 35 metres, if he runs at the rate of 9km/hr ?
- A. 50 sec
- B. 50 sec
- C. 50 sec
- D. 50 sec
Answer: Option D
Explanation:
Hints: Total length to cover = 4 sides of the square = 4 × 35 meters
9km/hr = 9000m/ 60 × 60 sec
Time taken = 4 × 35 × 60 × 60/ 9000 sec
= 56 sec
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