A boat moves downstream at 1 km in 5 minutes and upstream at 1 km in 12 minutes.What is the speed of current?

A boat moves downstream at 1 km in 5 minutes and upstream at 1 km in 1

1.	A boat moves downstream at 1 km in 5 minutes and upstream at 1 km in 12 minutes.What is the speed of current?
A.	4.5 km/h
B.	3.5 km/h
C.	2 km/h
D.	2.5 km/h
Answer» C. 2 km/h

Discussion

No Comment Found

Related MCQs

Shantanu drives a motorcycle and covers a distance of 715 km at a constant speed.If the speed of the motorcycle had been 10 km/h more, he would have taken 2 h less to cover the same distance. What is the original speed of the motorcycle?
The distance between two station 'X' and 'Y' is 450 km. A train L starts at 6:00 pm from X and moves towards Y at an average speed of 60 km/h. Another train M starts from Y at 5:20 pm and moves towards X at an average speed of 80 km/h How far from X will the two trains meet and at what time ?
A soldier fired two bullets at an interval of 335 seconds moving at a uniform speed v1. A terrorist who was running ahead of the soldier in the same direction, hears the two shots at an interval of 330 seconds? If the speed of sound is 1188 km/h, then who is the faster and by how much?
A train runs for 3 h at the speed of 40 km/h and then for 41/2 h at the speed of 60 km/h. Thus, it covers 3/5th part of the whole distance. It wants to cover the remaining distance in 4 h, find the average speed of the train for remaining distance ?
A student walks from his house at 21/2 km/h and reaches his school late by 6 min. Next day, he increase his speed by 1 km/h and reaches 6 min before school time. How far is the school form his house?
A man covers a certain distance on scooter. Had he moved 3 km/h faster, he would have taken 40 min less. If he had moved 2 km/ slower, he would have taken 40 min more. The distance (in km) is ?
A man started 20 min late and travelling at a speed of 11/2 times of his usual speed reaches his office in time. The time taken by the man to reach his office at his usual speed is ?
A person can row 71/2 km/h in still water. It takes him twice as long to row up a distance as to row down the same distance. Find the speed of the stream ?
A train leaves manipur at 6:00 am and reaches Dispur at 10:00 am. Another train leaves Dispur at 8:00 am and reaches Manipur at 11:00 am. At what time do the two trains cross each other ?
A bullock cart has to cover a distance of 120 km. in 15 hours. If it covers half of thejourney in3th time, the speed to cover5 the remaining distance in the time left has to be

A boat moves downstream at 1 km in 5 minutes and upstream at 1 km in 12 minutes.What is the speed of current?

Discussion

No Comment Found

Related MCQs

Reply to Comment