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How long will Ramesh take to run round a square park of edge 50 metres, if he runs at the rate of 18 km/hr?
- A40 sec
- B20 sec
- C80 sec
- D160 sec
Answer not set
Discussion 1
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CCommunity
We know that,
Perimeter of a square = 4 × S
Where,
S = Side of the square
Perimeter of the square park = 4 × 50 = 200 m
? Ramesh runs round the square park, he should cover the perimeter of the square park to complete one round.
Speed of Ramesh = 18 km/hr = 18 × 5/18 = 5 m/sec (? 1 km/hr = 5/18 m/sec)
Time taken by Ramesh to run round the square park = 200/5 = 40 sec (? Speed = Distance/Time)
∴ Time taken by Ramesh to run round the square park = 40 sec
Perimeter of a square = 4 × S
Where,
S = Side of the square
Perimeter of the square park = 4 × 50 = 200 m
? Ramesh runs round the square park, he should cover the perimeter of the square park to complete one round.
Speed of Ramesh = 18 km/hr = 18 × 5/18 = 5 m/sec (? 1 km/hr = 5/18 m/sec)
Time taken by Ramesh to run round the square park = 200/5 = 40 sec (? Speed = Distance/Time)
∴ Time taken by Ramesh to run round the square park = 40 sec