Boats & Streams Mcqs

Q.  The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?

a. 10 seconds
b. 15 seconds
c. 20 seconds
d. 12 seconds
e. None of these


ANSWER: See Answer
 
Speed of the boat downstream = 15 + 3 = 18 kmph

= 18 * 5/18 = 5 m/s
Hence time taken to cover 60 m = 60/5 = 12 seconds.
MCQs:  A boat goes 100 km downstream in 10 hours, and 75 m upstream in 15 hours. The speed of the stream is________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph. then the man’s rate along the current is__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row three-quarters of a kilometre against the stream in 11 minutes and down the stream in 7 minutes. The speed (in km/hr) of the man in still water is:_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row 9 1/3 km/hr in still water and he finds that is thrice as much time to row u p than as to row down the same distance in river. The speed of the current is:________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat travels upstream from B to A and downstream from A to B in 3 hours. If the speed of the boat in still water is 9km/hr and the speed of the current is 3km/hr, the distance A and B is:_______?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr then speed of the stream is________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat takes half time in moving a certain distance downstream than upstream. What is the ratio between the rate in still water and rate of current?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will he take to go 5km in stationery water?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row 7 ½ kms on hour in still water and he finds that it takes hi twice as long to row down the river. The rate of stream is
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row three-quarters of a kilometer against the stream in 11 ¼ minutes and return in 7 ½ minutes. The speed of the man in still water is________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat goes 6 km in an hour in still water. It takes thrice as much time in covering the same distance against the current. Speed of the current is_______?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat running upstream takes 8 hours 48 min to cover a certain distance while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and the speed of water current respectively?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  In a river, a man takes 3 hours in rowing 3 km upstream or 15 km downstream. What is the speed of the current?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row at 5 km/hr in still water, if the river is running at 1 km/hr it takes him 75 minutes to row to a place and back. How far is the place?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The Total cost of flooring a room at Rs.8.50 per square meter is Rs.510. If the length of the room is 8km it’s breadth is__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The length of a rectangular increased by 10% and it;s breadth is decreased by 10 %. Then the area of the new rectangle is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts