Problems on Boat & Stream Questions and Answers

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Q11
A boat moves upstream at the rate of 1 km in 10 minutes and downstream at the rate o 1 km in 6 minutes. The Speed of the current is :
  • A 1 km/hr
  • B 1.5 km/hr
  • C 2 km/hr
  • D 2.5 km/hr
Answer: Option C
Q12
River is running at 2 kmph. If takes a man twice as long to row up as to row down the river. the rate of the man in still water is :
  • A 6 km/hr
  • B 4 km/hr
  • C 10 km/hr
  • D 8 km/hr
Answer: Option A
Q13
A man rows to a place 48 km distant and 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 1.8 km/hr
  • C 3.5 km/hr
  • D 1.5 km/hr
Answer: Option A
Q14
The current of stream runs at 1 kmph. a motor boat goes 35 km upstream and back again to the starting point in 12 hours. The speed of the motor boat in still water is :
  • A 6 km/hr
  • B 7 km/hr
  • C 8 km/hr
  • D 8.5 km/hr
Answer: Option A
Q15
The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is :
  • A 3.6 km
  • B 2.4 km
  • C 1.2 km
  • D 1.8 km
Answer: Option A
Q16
A man can row 5 kmph in still water. If theriver is running at 1kmph, it takes him 75 minutes to row to a place and back. Hw far is the place ?
  • A 3 km
  • B 2.5 km
  • C 4 km
  • D 5 km
Answer: Option A
Q17
A man can row 5 kmph in still water. If the river is running at 1kmph, it takes him 75 minutes to row to a place and back. How far is the place ?
  • A 3 km
  • B 2.5 km
  • C 4 km
  • D 5 km
Answer: Option A
Q18
If a man rows a the rate of 5 kmph in still water and his rate against the current is 3.5 kmph, then the man's rate along the current is :
  • A 4.25 kmph
  • B 6 kmph
  • C 6.5 kmph
  • D 8.5 kmph
Answer: Option C
Q19
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
  • A 2 hours
  • B 3 hours
  • C 4 hours
  • D 5 hours
Answer: Option C
Q20
A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:
  • A 8.5 km/hr
  • B 9 km/hr
  • C 10 km/hr
  • D 12.5 km/hr
Answer: Option C
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