MCQ: Boats and Streams - 2 - SSC CGL MCQ

# MCQ: Boats and Streams - 2 - SSC CGL MCQ

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## 15 Questions MCQ Test Quantitative Aptitude for SSC CGL - MCQ: Boats and Streams - 2

MCQ: Boats and Streams - 2 for SSC CGL 2024 is part of Quantitative Aptitude for SSC CGL preparation. The MCQ: Boats and Streams - 2 questions and answers have been prepared according to the SSC CGL exam syllabus.The MCQ: Boats and Streams - 2 MCQs are made for SSC CGL 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for MCQ: Boats and Streams - 2 below.
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MCQ: Boats and Streams - 2 - Question 1

### If the upstream speed and downstream speed of a boat are 15 km/hr and 25 km/hr, what is the speed of stream?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 1

Speed of the stream

Hence, Option A is correct.

MCQ: Boats and Streams - 2 - Question 2

### The still water speed of a boat is 30 km/hr. It goes 28 km upstream in 1 hour 45 minutes. What is the downstream speed of the boat?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 2

1 hour 45 minutes = 1.75 hours

Speed of stream = 30 – 16 = 14 km/hr
So the answer = 30 + 14 = 44 km/hr
Hence, Option D is correct.

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MCQ: Boats and Streams - 2 - Question 3

### A boat can cover 60 km downstream in 2 hours when its engine is working and 10 km in 2 hours with the flow (when the engine is off). What is the upstream speed of the boat?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 3

Reqd. speed = 30 – 5 × 2 = 20 km/hr
Hence, Option D is correct.

MCQ: Boats and Streams - 2 - Question 4

A sailor goes 24 km downstream in 48 minutes and returns in 1 hour 20 minutes. What is the ratio of the upstream speed to the downstream speed?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 4

1 hour 20 minutes = 80 minutes
Upstream time : Downstream time = 80 : 48 = 5 : 3
Upstrem speed : Downstream speed = 3 : 5
Hence, Option D is correct.

MCQ: Boats and Streams - 2 - Question 5

If the downstream speed of a boat is 19 km/hr and the speed of the stream is 4 km/hr, what is the upstream speed of the boat?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 5

Upstream speed of the boat = 19 – 4 × 2 = 11 km/hr
Hence, Option C is correct.

MCQ: Boats and Streams - 2 - Question 6

If the upstream speed of a boat is 17 km/hr and the speed of the stream is 4 km/hr, what is the speed of the boat in still water?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 6

Speed of the boat in still water = 17 + 4 = 21 km/hr
Hence, Option C is correct.

MCQ: Boats and Streams - 2 - Question 7

A man rows a boat 48 km downstream in 3 hours and returns the same distance upstream in 6 hours. What is the ratio of the upstream speed to the downstream speed?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 7

So the answer = 8 : 16 = 1 : 2
Hence, Option A is correct.

MCQ: Boats and Streams - 2 - Question 8

Boat A beats Boat B by 100 meters in a 1000 meters downstream race. What is the ratio of the downstream speed of Boat A to that of Boat B?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 8

Speed → A : B = 1000 : (1000 – 100) = 10 : 9
Hence, Option D is correct.

MCQ: Boats and Streams - 2 - Question 9

A man swims 1 km upstream in 1/4 hour. If the speed of the current is 1 km/ hour, in how many seconds can it swim 400 meters upstream?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 9

So the answer = 0.10 × 3600 = 360 seconds
Hence, Option B is correct.

MCQ: Boats and Streams - 2 - Question 10

If the difference between the downstream speed and upstream speed of a boat is 8 km/hr, what is the speed of stream?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 10

Hence, Option C is correct.

MCQ: Boats and Streams - 2 - Question 11

If the ratio of the speed of stream to the speed of a boat in still water is 1 : 3, the downstream speed is what percentage of the upstream speed of the boat?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 11

Hence, Option D is correct.

MCQ: Boats and Streams - 2 - Question 12

If a boat can cover 800 meters upstream in 200 seconds, in how many minutes can it cover 84 km downstream?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 12

Since neither the downstream speed nor the speed of the stream is given, the answer cannot be determined.
Hence, Option D is correct.

MCQ: Boats and Streams - 2 - Question 13

A boat goes 12 km downstream and comes back to the starting point in 4 hours. If the speed of the stream is half the speed of the boat in still water, what is the speed of the stream?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 13

Let the speed of stream = x km/hr
Speed of the boat in still water = 2x km/hr

16 = 4x

So the answer = 4 km/hr
Hence, Option B is correct.

MCQ: Boats and Streams - 2 - Question 14

If the upstream speed and downstream speed of a boat are 9 km/hr and 36 km/hr, respectively, what is the speed of the boat in still water?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 14

Speed of the boat in still water

Hence, Option B is correct.

MCQ: Boats and Streams - 2 - Question 15

A man swims 5 km downstream in 1 hour. If the speed of the current is 1 km/hr, in how many minutes can he swim 200 meters upstream?

Detailed Solution for MCQ: Boats and Streams - 2 - Question 15

US = 5 – 2 = 3 km/hr

Hence, Option D is correct.

## Quantitative Aptitude for SSC CGL

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## Quantitative Aptitude for SSC CGL

314 videos|170 docs|185 tests