Home
MCQ QUIZ APP DOWNLOAD

What is the correct answer?

4

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then the speed of the first train is:

A. 70 km/hr

B. 75 km/hr

C. 84 km/hr

D. 87.5 km/hr

Correct Answer :

D. 87.5 km/hr


Let the speed of two trains be 7x and 8x km/hr.
Then, 8x = 4004 = 100
⇒x =1008 = 12.5
∴Speed of first train = (7 x 12.5) km/hr = 87.5 km/hr.
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

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

Also checkout

Units, Dimensions and Errors MCQ Co-Ordination Compound MCQ ionic Equilibrium MCQ Urologic infections and inflammations MCQ Data Structure MCQ Electricity Fundamentals MCQ Botany and Human Welfare MCQ Angiosperms (Embryology Life Cycles) MCQ H.C.F and L.C.M MCQ Motion MCQ Ethers MCQ Logarithm MCQ