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Railways PYQCBT 1 2016

RRB NTPC · Question 89

A bus covers some distance at a certain speed. If a person covers one-third of that distance in triple time, then the ratio of the speed of the person to the speed of the bus is: A. 1 : 3 B. 3 : 1 C. 1 : 9 D. 9 : 1

  1. B

  2. D

  3. A

  4. C

Show answer & explanation

Answer: (D) C

Explanation

Speed = distance/time. The person covers 1/3 the distance in 3 times the time, so the speed ratio is (1/3)/3 = 1/9: 1 : 9.