Ratio & Proportion Practice :: āĻ āύā§āĻĒāĻžāϤ āĻā§°ā§ āϏāĻŽāĻžāύā§āĻĒāĻžāϤ Practice
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Ratio compares two quantities of the same unit.
Easy Level (āϏāĻšāĻ)
Q1. Find: 3/5 of 20. ⧍ā§Ļā§° ā§Š/ā§Ģ āĻāĻŖāύāĻž āĻā§°āĻāĨ¤
Soln
3/5×20 = 12, Ans: 12
Q2. Simplify the ratio: 12 : 48. ⧧⧍ : ā§Ēā§Ž āϏāĻšāĻ āĻā§°āĻāĨ¤
Divide by 12, Ans: 1 : 4
Medium Level
Q3. If a : b = 4 : 7, find 2a : 2b. // If a : b = 4 : 7 āĻšāϞā§, 2a : 2b āĻāĻŋāĻŽāĻžāύ ?
Multiplying both sides by same number doesn’t change ratio. Ans: 4 : 7
Q4. If 5 workers can finish work in 12 days, 10 workers will take how many days ? ā§Ģ āĻāύ āϞā§āĻ ā§§ā§¨ āĻĻāĻŋāύāϤ āĻāĻžāĻŽāĻā§ āĻā§°ā§, ā§§ā§Ļ āĻāύ āϞāĻžāĻāĻŋāĻŦ āĻāĻŋāĻŽāĻžāύ āĻĻāĻŋāύ ?
Inverse proportion → 5 × 12 = 10 × x ⇒ x = 6, Ans: 6 days
Tough Level (āĻāĻ āĻŋāύ)
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Q5. A and B invest âš8000 and âš12000. Profit = âš90,000. Find each share. A āĻ ā§Žā§Ļā§Ļā§Ļ āĻā§°ā§ B āĻ ā§§ā§¨ā§Ļā§Ļā§Ļ āϞāĻāĻžāϞā§, āĻŽā§āĻ āϞāĻžāĻ ā§¯ā§Ļ,ā§Ļā§Ļā§ĻāĨ¤ āĻĻā§āϝāĻŧā§āĻāύ⧰ āϞāĻžāĻ āĻāĻŋāĻŽāĻžāύ ?
Ratio = 8000 : 12000 = 2 : 3Total parts = 5
A’s share = 2/5 × 90000 = 36000B’s share = 3/5 × 90000=54000
Ans: A = âš36,000, B = âš54,000
Q6. Find x: 6 / x = 9/12
Soln : 6 × 12 = 9x ⇒ 72 = 9x ⇒ x = 8
Ans: x = 8
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Q7: The ratio of two numbers is 3 : 5. If their sum is 64, find the numbers. āĻĒā§ā§°āĻ āĻĻā§āĻ āϏāĻāĻā§āϝāĻžā§° āĻ āύā§āĻĒāĻžāϤ 3 : 5āĨ¤ āĻŽā§āĻ āϝā§āĻāĻĢāϞ 64āĨ¤ āϏāĻāĻā§āϝāĻžāĻŦā§ā§° āĻāĻŋ ?
Soln : Total Parts = 3 + 5 = 8, 1 part value = 64 ÷ 8 = 8
First number =3/8×64 = 3×8 = 24
Second number = 5/8 × 64 = 5×8 = 40
āϏāĻŽāĻžāϧāĻžāύ
āĻŽā§āĻ āĻāĻžāĻ = 8, 1 āĻāĻžāĻ = 64 ÷ 8 = 8
āĻĒā§ā§°āĻĨāĻŽ āϏāĻāĻā§āϝāĻž = 3 × 8 = 24
āĻĻā§āĻŦāĻŋāϤā§āϝāĻŧ āϏāĻāĻā§āϝāĻž = 5×8 = 40
āĻāϤā§āϤ⧰ Ans: āĻĻā§āĻāĻž āϏāĻāĻā§āϝāĻž āĻšā§āĻā§: 24 āĻā§°ā§ 40. Numbers are: 24 and 40