Boats and Streams Problem Practice Question and Answer
8 Q: The distance between AB is 174 km. Two Boats Start moving towards each other at the same time at points A and B respectively. One in upstream and other in downstream. If their speed in still water is 9.6 km/ hr. and 19.4 km/ hr. respectively. Then in how much time they will meet.
4047 05f2394884e7e0d508b57ac0d
5f2394884e7e0d508b57ac0d- 14.5 hr.false
- 26 hr.true
- 39 hr.false
- 47 hr.false
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Answer : 2. "6 hr. "
Q: A motorboat, whose speed is 45 km./hr. in still water goes 180 km. downstream and comes back in a total of 9 hours. The speed of the stream (in km/hr.) is-
2399 05e96c3fa3d565c17b6031218
5e96c3fa3d565c17b6031218- 112false
- 221false
- 318false
- 410false
- 515true
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Answer : 5. "15"
Q: A boat goes 75 km upstream in 3 hours and 60 km downstream in 1.5 hours. Then the speed of the boat in still water is:
2117 05f2397e1e3005114abcaf6cb
5f2397e1e3005114abcaf6cb- 165 kmphfalse
- 260 kmphfalse
- 332.5 kmphtrue
- 430 kmphfalse
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Answer : 3. "32.5 kmph "
Q: A man can row 30 km downstream and return in a total of 8 hours. If the speed of the boat in still water is four times the speed of the current, then the speed of the current is:
2016 05dd62400c2282c484e4b29dc
5dd62400c2282c484e4b29dc- 11 km/hrfalse
- 22 km/hrtrue
- 34 km/hrfalse
- 43 km/hrfalse
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Answer : 2. "2 km/hr "
Q: A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is :
1761 05f23e93f4e7e0d508b591efc
5f23e93f4e7e0d508b591efc- 121 kmtrue
- 225 kmfalse
- 316 kmfalse
- 418 kmfalse
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Answer : 1. "21 km "
Q: The water in a river is flowing at a rate of 4 km/hr. If the width and depth of the river are 8m and 4m respectively, then how much water will enter the sea in 15 minutes?
1512 05f239698e3005114abcaecb8
5f239698e3005114abcaecb8- 1false
- 2true
- 3false
- 4false
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Answer : 2. " "
Q: A boat goes 12 km downstream and comes back to the starting point in 3 hours. If the speed of the current is 3 km/hr, then the speed (in km/hr) of the boat in still water is :
1483 05f23df6d3494c5438aa7f0c2
5f23df6d3494c5438aa7f0c2- 18 km/ hfalse
- 26 km/ hfalse
- 312 km/ hfalse
- 49 km/ htrue
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Answer : 4. "9 km/ h "
Q: A boat running downstreams covers a distance of 30 kms in 2 hours. While coming back the boat takes 6 hours to cover the same distance. If the speed of the current is half that of the boat, what is the speed of that boat in kmph?
1462 05da3fe99d691092704739eeb
5da3fe99d691092704739eeb- 115false
- 25false
- 310true
- 4Cannot be determinedfalse
- 5None of thesefalse
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