WBCS.LIVE practice question

A train which is moving at an average speed of 40 kmph, reaches its destination on time. When its average speed reduces to 35 kmph, then it reaches its destination 15 minutes late. The distance travelled by the train is

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 80 km
  2. 40 km
  3. 70 km
  4. 30 km

Correct answer and explanation

Correct answer: 70 km

Explanation: ✅ Correct Answer: C) 70 km 📚 Explanation: Let distance be D. Time difference is 15/60 = 0.25 hours. Equation: (D ÷ 35) - (D ÷ 40) = 0.25. (8D - 7D) ÷ 280 = 0.25. D = 280 × 0.25, which equals 70 km.