Multiple choice

Passage

Directions: Study the given data carefully and answer the following question. Three trains are standing at the same platform. The data regarding the three trains are given below. Train P: It travels 20% less distance than R. Train Q: It travels 420 km at a speed of 60 km/hr. Train R: It travels for 10 hours and has 10% more speed than train Q.

If the speed of train Q increases by 40%, then how much time will train Q save if it covers the same distance?

  1. 2 hours

  2. 1 hour

  3. 1.5 hours

  4. 2.5 hours

  5. 3 hours
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Train Q travels 420 km at 60 km/hr, taking 7 hours. If speed increases by 40%, new speed = 60 * 1.4 = 84 km/hr. New time = 420 / 84 = 5 hours. Time saved = 7 - 5 = 2 hours.

AI explanation

The initial time taken by train Q is its distance divided by its speed, which is 420 km divided by 60 km/hr, equaling 7 hours. If the speed increases by 40%, the new speed becomes 60 times 1.4, which is 84 km/hr. The new time taken to cover the same distance is 420 divided by 84, which equals 5 hours. The time saved is the difference between the initial and new times, 7 minus 5, resulting in 2 hours.

Keep practicing — related questions