Multiple choice

Passage

Directions: The three planes on a same airport travels to different destination by different routes. The data of 3 planes is given below. Plane M = Its speed is 800 km/hr and time taken by plane M is 20% more than Plane O. Plane N = It travels 25% less distance than plane M. Plane O = It covered 4,800 km in 8 hours.

If the speed of plane M increases by 25%, then how much time will plane M save if it covers the same distance as earlier?

  1. 1.92 hours

  2. 1 hour

  3. 0.32 hours

  4. 0.96 hours

  5. 2 hours
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A Correct answer
AI explanation

Plane O takes 8 hours to cover 4800 km, so plane M takes 20% more time, which is 9.6 hours. At its original speed of 800 km/hr, plane M covers a distance of 800 multiplied by 9.6, equaling 7680 km. When the speed of plane M increases by 25%, its new speed becomes 1000 km/hr, and the new time to cover the same distance is 7680 divided by 1000, or 7.68 hours. The time saved is the original 9.6 hours minus the new 7.68 hours, which equals 1.92 hours.

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