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SSC CGL 2022 PYQ — Question 64

SSC CGL Tier II - Quant - 3 Feb 2022 • Quantitative Aptitude • Q64

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An athlete runs 8 times around a circular field of radius 7 m in 3 minutes 40 seconds. His speed (in km/h) is: (Take π=227)(Take \ \pi =\frac{22}{7})

 

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 14425\frac{144}{25}

The radius of the field = 7 m.

Distance travelled by an athlete = 8 × 2 × 22/7 × 7 = 352m

Time taken = 3 minutes 40 seconds = 180 + 40 = 220 secs.

Speed = 352/220 × 18/5 = 144/25 km/hr.