Boat and Stream Questions – Part 2 – Maths & Reasoning | PDF Download

Q1. A boat travels upstream from Qto P and downstream from P to Q in 3 hours. If the distance between Pto Q is 4 km and the speed of the stream is 1 km/hr, then what is the speed of the boat in still water?

1. 3km/hr
2. 4km/hr
3. 5km/hr d
4. 6km/hr

Q2. The current of a stream runs at the rate of 4km an hour. A boat goes 6km and comes back to the starting point in 2 hours. The speed of the boat in still water is

1. 6  Km/h
2. 7 Km/h
3. 7.5 Km/h
4. 6.8 Km/h

Q3. A boats travels upstream from P to Q and downstream from Q to P in 3 hours. If the speed of the boat in still water is 9 km/hr and the velocity of the stream is 3 km/hr, then what is the distance from P to Q?

1. 14
2. 8
3. 12
4.  6

Q4. A ship develops a leak 20 km from the shore. Despite the leak, the ship is able to move towards the shore at a speed of 12 km/hr. However, the ship can stay afloat only for 23 minutes. If a rescue vessel were to leave from the shore towards the ship and it takes 8 minutes to evacuate the crew and passengers of the ship, what should be the minimum speed of the rescue vessel in order or be able to successfully rescue the people aboard the ship?
Q5. A ship develops a leak 20 km from the shore. Despite the leak, the ship is able to move towards the shore at a speed of 15 km/hr. However, the ship can stay afloat only for 27 minutes. If a rescue vessel were to leave from the shore towards the ship and it takes 7 minutes to evacuate the crew and passengers of the ship, what should be the minimum speed of the rescue vessel in order or be able to successfully rescue the people aboard the ship?
 
Q6. In which time a rabbit places 5 leaps. In a while, a dog throws three leaps. If a leap of a dog is equal tothe distance set in the 3 leaps of 3 rabbit, then what will be the ratio of dogs and rabbits leaps (speed)?
Q7. A soldier starts chasing the thief when the thief moves 10 steps, then the soldier move eight steps. 5steps of the soldier is equal to 7 steps of the thief What is the ratio of the speed of the soldier and thief?
Q8. A boat takes half time in moving a certain distance downstream than upstream. The ration of the speed of the boat in still water and that of the current is

1. 2:1
2. 1:2
3. 4: 3
4. 3:1

Q9. A man rows upstream 36 km and downstream 48 km taking 6 hours each time. The speed of the current is

1.  0.5 kmph
2. 2 kmph
3. 1kmph
4.  1.5kmph

 
Q10.A boat moves downstream at the rate of 1 km in 7  1/ 2 minutes and upstream at the rate of 5 km an hour. What is the speed of the boat in the still water?

1.  3  1/2 km/hour
2. 6  1/ 2 km/hour
3.  4 km/hour
4. 8 km/hour

Q11. A motorboat can go 25km up stream and 39 km downstream in 8 hours. While with same speed in 11 hours it can go 35 km upstream & 52 km downstream. What is the speed of current?

1. 2 Km/h
2. 3 Km/h
3. 4 Km/h
4. 5 Km/h

 

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