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How much time will a horse take to run around a square field of side 175 m if it runs at the speed of 15 km/hr?
1. 180 sec
2. 175 sec
3. 155 sec
4. 168 sec

1 Answer

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Best answer
Correct Answer - Option 4 : 168 sec

Given

Side of square = 175m

Speed of horse = 15 km/hr

Formula used

\(Speed = \;\frac{{Distance}}{{Time}}\)

Calculation

Perimeter of Square = 4 × side of square

⇒ 4 × 175 = 700m

⇒ Speed of horse= = 15 km/hr

⇒ Change the speed from km/hr to m/sec

∴ 1 km/hr = 5/18 m/sec

⇒ 15 km/hr × 5/18 

 25/6 m/sec

⇒ \(Time = \;\frac{{Distance}}{{Speed}}\)

⇒ \(Time = \;\frac{{700}}{{\frac{{25}}{6}}}\)

168 sec

 

 

 

 

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