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.

What is the time taken by plane N if its speed is 750 km/hr?

  1. 9.2 hours

  2. 7.68 hours

  3. 8.5 hours

  4. 9.6 hours

  5. 10 hours
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plane O: 4800 km / 8 hr = 600 km/hr. Plane M: Time = 1.2 * 8 hr = 9.6 hr. Distance M = 800 * 9.6 = 7680 km. Plane N: Distance = 0.75 * 7680 = 5760 km. Time N = 5760 / 750 = 7.68 hr.

AI explanation

From the data, plane O travels 4800 km in 8 hours, making its speed 600 km/hr, and plane M takes 20% more time than plane O, so plane M takes 9.6 hours. Since plane M travels at 800 km/hr for 9.6 hours, its total distance is 7680 km. Plane N travels 25% less distance than plane M, which is 75% of 7680, equaling 5760 km. Using the formula Time equals Distance divided by Speed, the time taken by plane N is 5760 divided by 750, which equals 7.68 hours.

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