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: 12 minutes
Explanation A's rate = 1/20 job/min B's rate = 1/30 job/min Together rate = 1/20 + 1/30 = (3+2)/60 = 1/12 job/min Time = 1 / (1/12) = 12 minutes
Answer: 162
Explanation 18: 54:: 54: c 18c = 54 x 54 c = 54 x 3 = 162 ND06-08-2023
Answer: 15 days
Explanation B's 1 day work = 1/20 C's 1 day work = 1/30 (B+C)'s 1 day work = 1/20 + 1/30 = 1/12 (B+C)'s 2 days work = 2 × 1/12 = 1/6 Remaining work = 1 - 1/6 = 5/6 A's 1 day work = 1/18 Time taken by A to complete 5/6 work: = (5/6) / (1/18) = 5/6 × 18 = 15 days Last verified on 04-02-2026
Answer: 190
Explanation To increase 76 in the ratio 5:2, we need to multiply 76 by 5/2. New value = 76 × 5/2 = 76 × 2.5 = 190
اگر ان کی پیداوار 40 ہے اور ان کا مجموعہ 13 ہے تو دوسرا نمبر کیا ہوگا؟
Answer: 5 and 8
Explanation Correct Answer: A) 5 and 8
Answer: 21
Explanation To find the fourth proportional, let's denote it as x. The proportion will be: 3 : 9 = 7 : x We can cross-multiply: 3x = 9 × 7 3x = 63 x = 63 / 3 x = 21
Answer: 2
Explanation Let's find the unknown value x using the proportion x : 5 :: 6 : 15. We can set up the proportion as x/5 = 6/15. Step 1: Cross-multiply 15x = 6 * 5 Step 2: Simplify 15x = 30 Step 3: Solve for x x = 30 / 15 x = 2
Answer: 8
Explanation More days means less workers needed (inverse relation) 16 workers × 40 days = x workers × 80 days x = (16 × 40)/80 = 8 workers
Answer: 10:9
Explanation Total students = 95 Girls = 45 So, Boys = 95 - 45 = 50 Ratio of boys to girls = 50 : 45 Simplify by dividing both by 5: = 10 : 9
Answer: 240
Explanation Given ratio: 50 paisa:1 rupee:2 rupee = 2:5:8 Let's assume the number of coins of each denomination are: 50 paisa = 2x 1 rupee = 5x 2 rupee = 8x Total amount = Rs. 352 The value of coins is: 50 paisa coins = 2x * 0.50 = Rs. x 1 rupee coins = 5x * 1.00 = Rs. 5x 2 rupee coins = 8x * 2.00 = Rs. 16x Adding these values, we get: x + 5x + 16x = 352 Combine like terms: 22x = 352 Divide by 22: x = 16 Now, find the total number of coins: 50 paisa coins = 2x = 2(16) = 32 1 rupee coins = 5x = 5(16) = 80 2 rupee coins = 8x = 8(16) = 128 Total number of coins = 32 + 80 + 128 = 240 So, the correct answer is: 240
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