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Railways PYQCBT 1 2016

RRB NTPC · Question 4

Car B is twice as fast as car A. If car A covers 90 km in 2 hours, what is the speed of car B? A. 90 kmph B. 80 kmph C. 100 kmph D. 70 kmph

  1. A

  2. B

  3. D

  4. C

Show answer & explanation

Answer: (A) A

Explanation

Speed of car A = distance / time = 90 km / 2 h = 45 km/h. Car B is twice as fast, so its speed = 2 × 45 = 90 km/h.