Multiple choice

A bus moving at a speed of 90 km/h takes 1 hour 40 minutes to cover a distance. If the speed is reduced by 30 km/h then in how much time the bus will cover the distance?

  1. 3 hours

  2. 2 hours 30 minutes

  3. 3 hours 20 minutes

  4. 2 hours 40 minutes

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Distance = Speed × Time = 90 km/h × 5/3 h (1 hour 40 minutes = 100/60 = 5/3 hours) = 150 km. At reduced speed of 60 km/h (90 - 30), time = Distance/Speed = 150/60 = 2.5 hours = 2 hours 30 minutes. This matches option B.

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