Home

In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. What is the duration of the flight ?

A. 3 hours

B. 2.4 hours

C. 1.4 hours

D. 1 hour

Correct Answer : D.


Let the duration of the flight be x hours.
Then600x-600x+12= 200
600x-12002x+1= 200
x(2x+1)=3
2x2+x−3=0
⇒(2x+3)(x−1)=0 
Neglecting the negative value for x we get x = 1

Download Objective type questions of Time and Distance PDF

Visit our PDF store

Get all objective type questions of Time and Distance MCQ

You can do it
  1. A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. Find the average speed…
  2. A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes…
  3. Robert is travelling on his cycle and has calculated to reach point A at 2 P.M. if he travels at 10…
  4. The distance between two cities A and B is 330 Km. A train starts from A at 8 a.m. and travel towards…
  5. A thief is noticed by a policeman from a distance of 200 m. The thief starts running and the policeman…
  6. It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes…
  7. A train can travel 50% faster than a car. Both start from point A at the same time and reach point B…
  8. Robert is travelling on his cycle and has calculated to reach point A at 2 P.M. if he travels at 10…
  9. A walks around a circular field at the rate of one round per hour while B runs around it at the rate…
  10. An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance…
  11. The ratio between the speeds of two trains is 7: 8. If the second train runs 400 kms in 4 hours, then…
  12. If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance…
  13. A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
  14. In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then…
  15. A person travels equal distances with speed of 3 km/hr, 4 km/hr and 5 km/hr and takes a total of 47…
  16. A farmer travelled a distance of 61 km in 9 hours. He travelled partly on foot @ 4 km/hr and partly…
  17. In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip…
  18. A man in a train notices that he can count 41 telephone posts in one minute. If they are known to be…
  19. A train traveled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How long…
  20. A man complete a journey in 10 hours. He travels first half of the journey at the rate of 21 km/hr and…
  21. A person travels from P to Q at a speed of 40 km/hr and returns by increasing his speed by 50%. What…
  22. The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then…
  23. In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip…
  24. Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many…
  25. A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for…
  26. A car travelling with 57 of its actual speed covers 42 km in 1 hr 40 min 48 sec. Find the actual…