Ratio & Proportion

JKSSB Class-IV & MTS · Mathematics · 98 practice questions with answers and explanations: 44 Easy, 32 Medium, 22 Hard.

Sample questions

Sample Easy question 1

Find the third proportional to 3 and 9.

  1. 24
  2. 25
  3. 27
  4. 30
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Answer: C. 3:9 = 9:x, so x = 81/3 = 27.

Sample Medium question 2

Three friends shared a bill in the ratio 2:3:4. If the total bill was Rs. 540, find the difference between the largest and smallest shares.

  1. 100
  2. 110
  3. 120
  4. 130
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Answer: C. Total parts=9, each part=60; largest=240, smallest=120, difference=120.

Sample Hard question 3

The incomes of A and B are in the ratio 5:7 and their expenditures are in the ratio 3:5. If each saves Rs. 1000, find A's income.

  1. 2300
  2. 2400
  3. 2500
  4. 2600
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Answer: C. Let income = 5x, 7x and expenditure = 3y, 5y. Solving 5x-3y=1000 and 7x-5y=1000 gives x=500, so A's income = 2500.

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