Boats and Streams aptitude Practice Question and Answer
8 Q: A boat goes downstream in one-third the time it takes to go upstream. Then the ratio between the speed of boat in still water and speed of the stream is
259 062fb455d047feb07925cf495
62fb455d047feb07925cf495- 11 : 2false
- 22 : 1true
- 35 : 1false
- 43 : 2false
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Answer : 2. "2 : 1"
Q: A boat goes 10kms an hour in still water, but takes twice as much time in going the same distance against the current. The speed of the current (in km/hr) is
303 062fb44efd30c675eef59f092
62fb44efd30c675eef59f092- 13 km/hrfalse
- 25 km/hrtrue
- 32 km/hrfalse
- 44 km/hrfalse
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Answer : 2. "5 km/hr"
Q: A boat travel 240 km downstream in 3 hours and the time is taken by the boat to travel the same distance in upstream in 6 hours. Find the speed of stream (in kmph).
340 062f11d8909a97851b6265dac
62f11d8909a97851b6265dac- 140 kmphfalse
- 230 kmphfalse
- 320 kmphtrue
- 435 kmphfalse
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Answer : 3. "20 kmph "
Q: Speed of a boat in still water is 6 km/hr and speed of the current is 2 km/hr. If boat takes four hours more in upstream than in the downstream to cover ‘D’ km, then find time take by boat to cover ‘D’ km in still water?
390 062e0fd56e50b894c6f5850ee
62e0fd56e50b894c6f5850ee- 15 hours 30 minutesfalse
- 25 hours 45 minutesfalse
- 35 hours 10 minutesfalse
- 45 hours 20 minutestrue
- 55 hours 40 minutesfalse
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Answer : 4. "5 hours 20 minutes"
Q: In a river the distance between two points is 80 km. A boat which rows 13 km/h in still water goes downstream from the first point to the second and returns upstream to starting point in 13 hrs., then find the speed of current.
928 061555b3cffe69f11b0d317f4
61555b3cffe69f11b0d317f4- 15 km / hfalse
- 23 km / htrue
- 32 km / hfalse
- 4None of thesefalse
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Answer : 2. "3 km / h "
Q: A man can swim at the rate of 3 km/hr. in still water. Then, if speed of the stream is 2 km/hr., then in what time he will cover a total distance of 5 km in with the stream and against the stream?
707 0611f7cc2b14e9c13a8ec16fa
611f7cc2b14e9c13a8ec16fa- 16 hourstrue
- 26.5 hoursfalse
- 34 hoursfalse
- 45 hoursfalse
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Answer : 1. "6 hours"
Q: The speed of a boat in still water 11 km/hr. It can go 12 km upstream and return downstream to the engine point in 2hr 45min. What is the speed of stream?
665 060ba11fb02ea6c40949f4b73
60ba11fb02ea6c40949f4b73- 13 km/hr.false
- 22 km/hrfalse
- 35 km/hrtrue
- 44 km/hrfalse
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Answer : 3. "5 km/hr"
Q: A person swims a distance of 28 km. in the direction of stream in 5 hours and a distance of 13 km. in 5 hours against the stream. What is the velocity of the stream?
575 06099114ff738a51c29aa3141
6099114ff738a51c29aa3141- 12.5 km./hr.false
- 21.8 km./hr.false
- 32 km./hr.false
- 41.5 km./hr.true
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