# CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

The speed of a boat in still water is 60 kmph and the speed of the current is 20 kmph. Find the speed downstream and upstream

- (a)
35, 25 kmph

- (b)
40, 60 kmph

- (c)
50, 55 kmph

- (d)
80, 40 kmph

Answer: Option D

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

The speed of a boat in still water is 2 km/h If its speed upstream is 1 km/h, then speed of the stream is :

- (a)
2 kmph

- (b)
3 kmph

- (c)
1 kmph

- (d)
None of these

Answer: Option C

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A man can row with the stream at 10 km/h and against the stream at 5 km/h. Man’s speed in still water is :

- (a)
5 kmph

- (b)
2.5 kmph

- (c)
7.5 kmph

- (d)
15 kmph

- (e)
None of these

Answer: Option C

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A boat goes 40 km upstream in 8 hours and a distance of 36 km downstream in 6 hours. The speed of the boat in standing water is :

- (a)
6.5 kmph

- (b)
6 kmph

- (c)
5.5 kmph

- (d)
5 kmph

Answer: Option C

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 10 hours to row to a place and back. How far is the place?

- (a)
31.2 kmph

- (b)
28.8 kmph

- (c)
30 kmph

- (d)
20 kmph

Answer: Option B

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A boatman can row 1 km against the stream in 20 minutes and return in 18 minutes. Find the rate of current

- (a)
1/3 kmph

- (b)
1/6 kmph

- (c)
5/6 kmph

- (d)
None of these

Answer: Option B

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A boat travels at a speed of 15 kmph. It travels between points A and B, which are 200 km apart. If the boat goes downstream from A to B in 10 hours, how long will it take to return upstream from B to A (in hours)?

Answer: 20

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

Two boats, travelling at 5 and 10 kms per hour, head directly towards each other. They begin at a distance of 20 kms from each other. How far apart are they (in kms) two minutes before they collide?

- (a)
1/12

- (b)
1/6

- (c)
1/4

- (d)
1/2

Answer: Option D

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A boat can travel 10 km upstream in 2 hours. If the speed of the boat becomes half, then the return journey also takes the same time. What is the speed of water flow?

- (a)
5/3 kmph

- (b)
10/3 kmph

- (c)
7/3 kmph

- (d)
8/3 kmph

- (e)
5/2 kmph

Answer: Option A

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A boat starts from A and moves towards B. Another boat from B, with the same speed as that of first boat, starts moving towards A. They meet at a point which is 20 km towards B from exactly half-way of A to B and the distance between A and B is 120 km.

What is the ratio of speed of boat to that of water?

- (a)
2 : 1

- (b)
3 : 2

- (c)
3 : 1

- (d)
4 : 1

- (e)
5 : 2

Answer: Option C

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**CRE 4 - Boats and Streams | Arithmetic - Time, Speed & Distance**

A boat P travels 80 km upstream from point A to point B in 10 hours and downstream from point B to point A in 5 hours. Another boat Q can travel from point A to a point C 60 km upstream in 5 hours.

What is the speed of the boat Q in still water?

- (a)
12 kmph

- (b)
16 kmph

- (c)
20 kmph

- (d)
24 kmph

- (e)
30 kmph

Answer: Option B

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