Practise Ratio and Proportion MCQs MCQs in Maths. Attempt multiple-choice questions, check answers and revise related subtopics.
Study Ratio and Proportion MCQs through multiple-choice questions in Maths. This subtopic contains 287 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
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Answer: 20 : 1
Explanation Let's convert both measurements to the same unit (inches): 5 feet = 5 × 12 = 60 inches 3 inches = 3 inches Now, the ratio = 60 : 3 → simplify by dividing both sides by 3 → 20 : 1
Answer: 12
Explanation Inverse proportion: more days, fewer employees 24 employees × 20 days = x employees × 40 days x = (24 × 20)/40 x = 12
Answer: 5:9
Explanation Calculating the Ratio Passed students = 25 Total students = 45 Ratio = Passed students/Total students = 25/45 = 5/9 = 5:9
Answer: 1:5
Explanation Convert minutes to seconds: 2 minutes = 2 × 60 = 120 seconds Ratio = 120 seconds : 600 seconds = 1 : 5
Answer: 9 : 20
Explanation Divide both numbers by their greatest common divisor (GCD), which is 4: 36 ÷ 4 = 9 80 ÷ 4 = 20
Answer: 720
Explanation 600 units are made in 9 days with 20 machines. To find the number of units made per day, divide 600 by 9: 600 ÷ 9 = 66.67 units per day. Since there are 20 machines, the number of units made per day per machine is : 66.67 ÷ 20 = 3.33 units per day per machine. Now, if we have 18 machines and want to produce units for 12 days , the total units that can be made are: 3.33 units per day per machine × 18 machines × 12 days = 720 units. So, with 18 machines, the soap factory can produce 720 units in 12 days.
Answer: 90
Explanation
Answer: 8 : 15 : 10
Explanation Given that, P : Q = 8 : 15, Q : R = 3 : 2 P : Q : R = (8 x 3) : (15 x 3) : (15 x 2) = 24 : 45 : 30 ∴ P : Q : R = 8 : 15 : 10 Here, consequent of first ratio should be equal to the antecedent of second ratio .
Answer: Inverse Proportion
Explanation Two quantities are in inverse proportion when one increases and the other decreases . Their product always remains constant. Common in real-life situations like speed & time . If one doubles , the other becomes half. It is also called indirect proportion . Direct Proportion → Both increase or decrease together. Last verified on 12-04-2026
Answer: 18
Explanation Ratio of boys to girls = 2:3 Number of boys = 12 Let's find the multiplier: 2x = 12 x = 6 Now, find the number of girls: 3x = 3 * 6 = 18
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