Boats and Streams Problem Practice Question and Answer
8 Q: A man rows 12 km in 5 hours against the stream and the speed of current being 4 kmph, What time will be taken by him to row 15 km with the stream?
1420 05f23be4a4e7e0d508b5841ea
5f23be4a4e7e0d508b5841ea- 11 hourfalse
minutes - 21 hourtrue
minutes - 31 hourfalse
minutes - 41 hourfalse
minutes
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Answer : 2. "1 hour minutes "
Q: The speed of the current is 5 km / hour. A motorboat goes 10 km upstream and back again to the starting point in 50 minutes. The speed (in km / hour) of the motorboat in still water is:
1337 05dd62299a1c5834595c3a927
5dd62299a1c5834595c3a927- 120false
- 226false
- 325true
- 428false
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Answer : 3. "25 "
Q: A boat rows downstream covers a distance of 20 km in 2 hrs while it covers the same distance upstream in 5 hrs. Then speed of the boat in still water is :
1319 05f23e7d11436461f6a2f5859
5f23e7d11436461f6a2f5859- 19 km/ hrfalse
- 210 km/ hrfalse
- 37 km/ hrtrue
- 48 km/ hrfalse
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Answer : 3. "7 km/ hr "
Q: A man can row at a speed of 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 :
1311 05f23ea55e3005114abcc5c22
5f23ea55e3005114abcc5c22- 12false
- 22.5false
- 31false
- 41.5true
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Answer : 4. "1.5 "
Q: A motorboat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 and half an hour. If the speed of the water is 1.5 km / h, then the speed of the boat in still water is:
1283 05f23dd8b1436461f6a2f3713
5f23dd8b1436461f6a2f3713- 119.5 km/htrue
- 219 km/hfalse
- 317 km/hfalse
- 417.5 km/hfalse
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Answer : 1. "19.5 km/h"
Q: A man swims downstream distance of 15 km in 1 hour. If the speed of the current is 5 km/ hr, the time taken by the man to swim the same distance upstream is :
1265 05dd6230bc2282c484e4b25d3
5dd6230bc2282c484e4b25d3- 11 hr 30 minfalse
- 245 minfalse
- 32 hr 30 minfalse
- 43 hrstrue
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Answer : 4. "3 hrs"
Q: A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in hours. The speed of the current is:
1252 05f23e32c1436461f6a2f43c6
5f23e32c1436461f6a2f43c6- 11.5 km/ hrfalse
- 22.5 km/ hrfalse
- 31 km/ hrfalse
- 42 km/ hrtrue
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Answer : 4. "2 km/ hr "
Q: The speed of a boat downstream is 15 km/hr. and the speed of current is 3 km/hr. Find the total time taken by the boat to cover 15 km upstream and 15 km downstream.
1203 05f2398831436461f6a2dc47a
5f2398831436461f6a2dc47a- 13 hours 10 minutesfalse
- 22 hours 30 minutesfalse
- 32 hours 40 minutestrue
- 42 hours 42 minutesfalse
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