issb mathematics MCQ #438

Two trains 50 km/h and 70 km/h opposite direction. Relative speed?

issb mathematics MCQ #438

  1. Question 1

    Q1. Two trains 50 km/h and 70 km/h opposite direction. Relative speed?

    • A) 10 km/h
    • B) 20 km/h
    • C) 120 km/h
    • D) 60 km/h

    Answer: 120 km/h

    Explanation: Opposite directions add speeds so 50 plus 70 equals 120 km/h. Work each step carefully; ISSB math rewards accuracy under time pressure.