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A cyclist covers 36 km in 2 hours with the wind and 24 km in 2 hours against the wind. His speed in still air is

2247Medium DSSSB TGT Computer Science 0 replies 1 views
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A cyclist covers 36 km in 2 hours with the wind and 24 km in 2 hours against the wind. His speed in still air is

  • A15 km/h
  • B18 km/h
  • C12 km/h
  • D30 km/h
Correct answer: A

Explanation

His speeds with and against the wind are 18 and 12 km/h, so the speed in still air is (18 + 12) / 2 = 15 km/h.
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