Boats and Streams aptitude Practice Question and Answer
8 Q: Ratio of time taken by a sailor to cover some distance upstream and downstream is 4 : 1. If speed of stream is 4.5 km/hr. Then find out speed of boat?
5560 05e8b071f67af633f22bda983
5e8b071f67af633f22bda983- 18.5 km / hrfalse
- 29.5 km / hrfalse
- 37.5 km / hrtrue
- 48 km / hrfalse
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Answer : 3. "7.5 km / hr "
Q: The ratio of speed of boat in still water to speed of stream is 8 : 1. It takes 4 hours by boat to cover 54 km in downstream & 42 km in upstream. Find the downstream speed of boat.
1390 0603f63a256eac5533a8f5532
603f63a256eac5533a8f5532- 125 kmphfalse
- 224 kmphfalse
- 321 kmphfalse
- 427 kmphtrue
- 523 kmphfalse
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Answer : 4. "27 kmph"
Q: A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go 40 km upstream and 55 km downstream. The speed of the boat in still water is.
1016 05f238fca4e7e0d508b5799c8
5f238fca4e7e0d508b5799c8- 18 km / htrue
- 23 km / hfalse
- 34 km / hfalse
- 4None of thesefalse
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Answer : 1. "8 km / h "
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.
933 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 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.
796 05dd62227db51363c0238f957
5dd62227db51363c0238f957- 14 kmph and 3 kmphfalse
- 24.5 kmph and 0.5 kmphtrue
- 34 kmph and 2 kmphfalse
- 45 kmph and 2 kmphfalse
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Answer : 2. "4.5 kmph and 0.5 kmph"
Q: A boat takes half time in moving a certain distance downstream than upstream. what is the ratio between the rate in still water and the rate of current?
774 05f238d92e007d6124d78cc0c
5f238d92e007d6124d78cc0c- 12 : 1false
- 23 : 1true
- 31 : 2false
- 41 : 3false
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Answer : 2. "3 : 1"
Q: Two boats are traveling with speeds of 36 km/hr and 54 km/hr respectively towards each other. What is the distance (in meters) between the two boats one second before they collide?
716 05ff578fe9fc6f75b3f609c25
5ff578fe9fc6f75b3f609c25- 110false
- 215false
- 325true
- 45false
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Answer : 3. "25"
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?
711 0611f7cc2b14e9c13a8ec16fa
611f7cc2b14e9c13a8ec16fa- 16 hourstrue
- 26.5 hoursfalse
- 34 hoursfalse
- 45 hoursfalse
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