a) 43.2 b) 48 c) 41.6 d) 44.8 Answer: c Explanation: Let the speed of the current be ...
View QuestionA man takes 2.2 times as long to row a distance upstream as to row the same distance downstream. If he can row 55 km downstream in 2 hour 30 minutes, what is the speed of the boat in the still water?
a) 40 km/h b) 8 km/h c) 16 km/h d) 24 km/h Answer: c Explanation: $$\eqalign{ & ...
View QuestionIf the speed of a boat in still water is 20km/hr and the speed of the current is 5km, then the time taken by the boat to travel 100 km with the current is?
a) 2 hours b) 3 hours c) 4 hours d) 7 hours Answer: c Explanation: Relative speed = ...
View QuestionA man can row 6 km/hr in still water. If the speed of the current is 2 km/hr he takes 4 hours more in upstream than the downstream. The distance is?
a) 30 km b) 24 km c) 20 km d) 32 km Answer: d Explanation: Speed of ...
View QuestionA boat travels 24 km upstream in 6 hours and 20 km downstream in 4 hours. Then the speed of boat in still water and the speed of current are respectively
a) 4 kmph and 3 kmph b) 4.5 kmph and 0.5 kmph c) 4 kmph and 2 kmph d) 5 ...
View QuestionA boat while dowenstream in a reiver converd a distance of 50 miles at an average speed of 60 miles per hour. While returning , because of the water resistance , it took 1 hour 15 minutes to cover the same distance What was the average speed during the whole journey?
a) 40 mph b) 48 mph c) 50 mph d) 55 mph Answer: b Explanation: $$\eqalign{ & {\text{Time taken to cover ...
View QuestionA boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in 6(1/2) hours. The speed of the current is ?
A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km ...
View QuestionA man can row at a speed of 4(1/2) km/hr in still water. If he takes 2 times as long to row a distance upstream as to row the same distance downstream, then the speed of stream (in km/hr) is-
A man can row at a speed of $$4\frac{1}{2}$$ km/hr in still water. If he takes 2 times ...
View QuestionA man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:
a) 1 km/hr b) 1.5 km/hr c) 2 km/hr d) 2.5 km/hr Answer: a Explanation: Suppose he move 4 ...
View QuestionA 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:
a) 2 : 1 b) 3 : 1 c) 3 : 2 d) 4 : 3 Answer: b Explanation: ...
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