Home

What is the correct answer?

4

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. 1 hour


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
Share this question with your friends
Show all Time and Distance MCQ

Please do not use chat terms. Example: avoid using "grt" instead of "great".

Submit
Load More..

Related Questions

In covering a distance of 30 km, Abhay takes 2 hours more than Sameer.… A person crosses a 600 m long street in 5 minutes. What is his speed in… A man covered a certain distance at some speed. Had he moved 3 kmph faster,… If a person walks at 14 km/hr instead of 10 km/hr, he would have walked… A train can travel 50% faster than a car. Both start from point A at the… The ratio between the speeds of two trains is 7: 8. If the second train… An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours.… A man in a train notices that he can count 41 telephone posts in one minute.… The ratio between the speeds of two trains is 7 : 8. If the second train… A car travelling with 57 of its actual speed covers 42 km in 1 hr… In a flight of 600 km, an aircraft was slowed down due to bad weather.… A thief is noticed by a policeman from a distance of 200 m. The thief… A person travels equal distances with speed of 3 km/hr, 4 km/hr and 5… Robert is travelling on his cycle and has calculated to reach point A… A farmer travelled a distance of 61 km in 9 hours. He travelled partly… The distance between two cities A and B is 330 Km. A train starts from… A walks around a circular field at the rate of one round per hour while… It takes eight hours for a 600 km journey, if 120 km is done by train… A man on tour travels first 160 km at 64 km/hr and the next 160 km at… Robert is travelling on his cycle and has calculated to reach point A… A man complete a journey in 10 hours. He travels first half of the journey… A train traveled at an average speed of 100 km/hr, stopping for 3 minutes… In a flight of 600 km, an aircraft was slowed down due to bad weather.… Excluding stoppages, the speed of a bus is 54 kmph and including stoppages,… A person travels from P to Q at a speed of 40 km/hr and returns by increasing… A man on tour travels first 160 km at 64 km/hr and the next 160 km at…

Also checkout

Odd Man Out MCQ Surface Chemistry MCQ Percentage MCQ Organic Chemistry MCQ Puzzle MCQ Stocks and Shares MCQ Statement & Assumption MCQ Physical Measurement MCQ Theory of Machines MCQ Accounts Fundamental MCQ C++ Programming MCQ Circulatory System MCQ