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: 8
Explanation We can set up the proportion as: 6/m = 9/12 Cross-multiply: 6 × 12 = 9 × m Simplify: 72 = 9m Divide both sides by 9: m = 72/9 m = 8 So, the correct answer is: 8
Answer: 35
Explanation Using proportion: 7/100 = x/500 → x = 7 × 5 = 35.
Answer: 8 : 12 : 9
Explanation Given: Asad : Sania = 2 : 3 Sania : Fahad = 4 : 3 To find the continued ratio, we need to make Sania's ratio equivalent in both. Let's adjust the ratios: Asad : Sania = 2 : 3 = 8 : 12 (multiplied both parts by 4) Sania : Fahad = 4 : 3 = 12 : 9 (multiplied both parts by 3) Now, combining them: Asad : Sania : Fahad = 8 : 12 : 9
Answer: 5:14
Explanation To find the compound ratio, multiply the corresponding parts: (3 * 8 * 25) : (4 * 15 * 28) = 600 : 1680 Simplifying the ratio: = 600 / 1680 = 5/14 = 5 : 14
دو لگاتار انٹیجرز کا مجموعہ 31 ہے۔ ان میں سے انٹیجرز کیا ہیں؟
Answer: 15 and 16
Explanation Let the two consecutive integers be x and x+1. Their sum is given by: x+(x+1)=31 Simplify and solve for x: 2x+1=31 2x=30 Divide both sides by 2: x=15 So, the two consecutive integers are: 15 and 15+1=16 Answer: 15 and 16
Answer: 520
Explanation Total parts = 6 + 4 = 10; each part = 1300 ÷ 10 = Rs. 130 Smallest part = 4 × 130 = Rs. 520
Answer: 24
Explanation To find the fourth proportional, we need to set up a proportion : 60 : 48 :: 30 : x Where x is the fourth proportional. We can rewrite this as: 60/48 = 30/x Cross-multiplying, we get: 60x = 30 × 48 Simplifying, we get: 60x = 1440 Dividing both sides by 60, we get: x = 24 So, the fourth proportional is 24.
Answer: 10:15:9
Explanation Given: a:b = 2:3 b:c = 5:3 First, make the b values equivalent: a:b = 2:3 = 2 × 5 : 3 × 5 = 10:15 b:c = 5:3 = 5 × 3 : 3 × 3 = 15:9 Now, a:b:c = 10:15:9
Answer: 24
Explanation Ratio of boys to girls = 5:3 If 5 parts = 40 boys, then 1 part = 40 ÷ 5 = 8 Girls = 3 parts = 8 × 3 = 24 girls .
Answer: 3:1
Explanation To find the ratio, divide the number of red cars by the number of green cars: 42 (red) ÷ 14 (green) = 3 So, for every 1 green car, 3 red cars were sold. Hence, the ratio is 3:1.
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