The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream

1. 3

2. 6

3. 5

4. 3

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A boat covers a certain distance downstream in 1 hour, while it comes back in 1 ½ hours. If the speed of the stream be 3 kmph. What is the speed of the boat in still water

1. 12 kmph

2. 13 kmph

3. 15 kmph

4. 16 kmph

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Correct Answer :

15 kmph

Explanation :
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A man rows 13 km upstream in 5 hours and also 28 km downstream in 5 hours. The velpciy of the stream is:. [Assistant Grade]

1. 1.5 km/hr

2. 2.5 km/hr

3. 2 km/hr

4. 3 km/hr

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Correct Answer :

1.5 km/hr

Explanation :
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A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it take 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively

1. 1:3

2. 3:8

3. 6:3

4. 8:3

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Correct Answer :

8:3

Explanation :
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A man can row 10 kmph in still water and the river is running at 2 kmph. If the man takes 1 hr to row to a place and back, how far is the place

1. 4.8

2. 5

3. 4.5

4. 5.6

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Correct Answer :

4.8

Explanation :
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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

1. 8.5 km/hr

2. 9 km/hr

3. 10 km/hr

4. 12.5 km/hr

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Correct Answer :

10 km/hr

Explanation :
No Explanation available for this question

A man rows 750 m in 675 seconds against the stream and returns in 7 and half minutes. His rowing speed in still water is: [Assistant Grade]

1. 3km/hr

2. 5 km/hr

3. 4 km/hr

4. 6 km/hr

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Correct Answer :

5 km/hr

Explanation :
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A motorboat whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:

1. 4

2. 5

3. 6

4. 10

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A man row a boat at 10 kmph in still water. If the speed of the stream is 6 kmph, the time taken to row a distance of 80 km down the stream is:[Central Excise]

1. 8 hours

2. 10 hours

3. 5 hours

4. 20 hours

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Correct Answer :

5 hours

Explanation :
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In one hour, a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still water (in km/hr) is:

1. 2

2. 4

3. 8

4. 12

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Explanation :
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