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RRB Group D Boats and Streams — practice questions

Explore 20 free Boats and Streams questions in RRB Group D Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.

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Boats and Streams questions and exercises with answers

Showing questions 1–20 of 20.

A boat goes 2 km against the current in 1 hour and 1 km along the current in 10 minutes. How long will it take to travel 5 km in still water?Read the answer and worked solution →Complete the idea of a percentageRead the answer and worked solution →Ratios into percentagesRead the answer and worked solution →Order the steps of the unitary methodRead the answer and worked solution →What is the percentage taken OF?Read the answer and worked solution →True or false: percentages and their baseRead the answer and worked solution →Match each comparison to its formRead the answer and worked solution →Common percentage conversionsRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every correct way to express one quarterRead the answer and worked solution →Flip and pair: fraction with percentageRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →True or false: the unitary methodRead the answer and worked solution →Ratio, fraction, or percentage?Read the answer and worked solution →Complete the comparison chainRead the answer and worked solution →Percentage of a quantityRead the answer and worked solution →Order the steps: turn a part into a percentageRead the answer and worked solution →Assertion and reason: comparisonsRead the answer and worked solution →

Worked practice questions

A boat goes 2 km against the current in 1 hour and 1 km along the current in 10 minutes. How long will it take to travel 5 km in still water?

  1. 1 hour 15 minutes
  2. 40 minutes
  3. 1 hour
  4. 1 hour 30 minutes
Show answer and solution

Correct answer: A. 1 hour 15 minutes

1. Upstream speed = 2 km/h; downstream speed = 1 km in 10 min = 6 km/h. 2. Speed in still water = (downstream + upstream)/2 = (6 + 2)/2 = 4 km/h. 3. Time for 5 km = 5/4 h = 1.25 h = 1 hour 15 minutes. _Source: RRB Group D (RRC) PYQ, held 27-10-2013, Q.48._

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Complete the idea of a percentage

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Missing parts
  1. Answer
    100
    Choices
    1. 100
    2. 10
    3. 1
  2. Answer
    20%
    Choices
    1. 20%
    2. 5%
    3. 25%
Complete the statement
A ratio compares two quantities. A percentage expresses that comparison out of {0}, which is why 5 oranges among 25 fruits is {1}.
A percentage is a comparison expressed out of 100. Source: syllabus Maths, Ch 7 Comparing Quantities.

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Ratios into percentages

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Questions
  1. Question
    5 oranges among 25 fruits is what percentage?
    Choices
    1. 5%
    2. 20%
    3. 25%
    Correct choice
    20%
  2. Question
    The ratio of 5 oranges to 20 apples simplifies to
    Choices
    1. 4 : 1
    2. 5 : 25
    3. 1 : 4
    Correct choice
    1 : 4
  3. Question
    So the apples number how many times the oranges?
    Choices
    1. 4 times
    2. 5 times
    3. one quarter
    Correct choice
    4 times
  4. Question
    20 apples among 25 fruits is
    Choices
    1. 20%
    2. 80%
    3. 25%
    Correct choice
    80%
The chapter's own basket: 20 apples and 5 oranges so 5 of the 25 fruits are oranges, which is 20%. Source: syllabus Maths, Ch 7 Comparing Quantities.

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