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RPF Constable Percentages, Ratio and Proportion — practice questions

Explore 9 free Percentages, Ratio and Proportion questions in RPF Constable Arithmetic. Open each question or exercise to read its content, reference answers and available explanation.

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Percentages, Ratio and Proportion questions and exercises with answers

Showing questions 1–9 of 9.

Match the arithmetic resultRead the answer and worked solution →Eight identical taps fill a tank in 15 minutes. How long would five such taps take?Read the answer and worked solution →On a map of scale 1:50000, a road is 3.6 cm long. Its actual length is?Read the answer and worked solution →A:B = 2:3 and B:C = 4:5. If A+B+C = 140, find A.Read the answer and worked solution →A 40 L mixture is milk:water = 3:1. Remove 8 L of mixture and add 8 L water. New ratio?Read the answer and worked solution →A invests ₹12000 for 8 months and B ₹8000 for 9 months. Share ₹21000 profit by capital×time. A gets?Read the answer and worked solution →A person spends 80% of income. Income rises 20% and spending rises 10%. Savings rise by?Read the answer and worked solution →Percent, ratio and proportionRead the answer and worked solution →Proportion in real situationsRead the answer and worked solution →

Worked practice questions

Match the arithmetic result

Read exercise and reference answers
Matching pairs
  1. Left
    15:25 = x:40; find x
    Right
    24
  2. Left
    ₹840 shared 2:5:7; largest share
    Right
    ₹420
  3. Left
    3:x = 12:20; find x
    Right
    5
Instructions
Tap each calculation and its matching answer.

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Eight identical taps fill a tank in 15 minutes. How long would five such taps take?

  1. 18 min
  2. 24 min
  3. 20 min
  4. 25 min
Show answer and solution

Correct answer: B. 24 min

For the same tank, taps × time is constant: 8 × 15 ÷ 5 = 24 minutes.

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On a map of scale 1:50000, a road is 3.6 cm long. Its actual length is?

  1. 0.18 km
  2. 1.8 km
  3. 18 km
  4. 180 km
Show answer and solution

Correct answer: B. 1.8 km

The actual length is 3.6 × 50000 = 180000 cm = 1.8 km.

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More Arithmetic topics

Decimals and FractionsMensurationNumber System and Arithmetic OperationsTime, Speed and DistanceProfit, Loss, Discount and InterestAverages and Data InterpretationWhole Numbers, Factors and Multiples