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: 7 cm by 9.8 cm
Explanation Enlarge ratio = 7/5 new length = 5*7/5=7 cm New width = 7*7/5=49/5=9.8 cm
Answer: 70:1
Explanation Step 1: Convert both weights to the same unit 1 kg = 1000 g 3½ kg = 3.5 kg = 3.5 × 1000 g = 3500 g Step 2: Calculate the ratio Ratio = 3500 g : 50 g = 3500 / 50 = 70 Step 3: Express the ratio in the required format The ratio is 70:1.
Answer: 3:01
Explanation Given: Time downstream is half the time upstream. Let: - Speed of boat in still water = b - Speed of current = c Speed downstream = b + c Speed upstream = b - c Time ∝ 1 / Speed Given: Time downstream = (1/2) × Time upstream => 1/(b + c) = (1/2) × 1/(b - c) => 2/(b + c) = 1/(b - c) => 2(b - c) = b + c => 2b - 2c = b + c => 2b - b = c + 2c => b = 3c => b : c = 3 : 1
Answer: 400
Explanation Total amount =1000 Total parts of amount = 2+3 = 5 One part is + 1000/5 = 200 So Rabil amount part = 2 x 200 = 400
Answer: 9:8:10
Explanation Let's assume 2/3 A = 3/4 B = 0.6C = 18 2/3 A = 18 ⇒ A = 27 3/4 B = 18 ⇒ B = 24 0.6C = 18 ⇒ C = 30 A:B:C = 27:24:30 = 9:8:10
Answer: 3:2
Explanation If p p p is 50% greater than q q , this means: p = q + 0.5 q = 1.5 q p = q + 0.5q = 1.5q The ratio p : q p : q becomes: p : q = 1.5 q : q = 3 : 2 p : q = 1.5q : q = 3 : 2
Answer: Rs.1200, Rs.800
Explanation To divide Rs. 2000 in the ratio 3:2, we need to first calculate the total number of shares: 3 + 2 = 5 Then, we divide the total amount (Rs. 2000) by the total number of shares (5): Rs. 2000 ÷ 5 = Rs. 400 Now, we multiply the share value (Rs. 400) by the respective ratio numbers to find the two shares: Share 1 (3): 3 × Rs. 400 = Rs. 1200 Share 2 (2): 2 × Rs. 400 = Rs. 800 So, the two shares are Rs. 1200 and Rs. 800 .
Answer: 21
Explanation The fourth proportion to numbers a, b,c is the number x such that: a/b = c/x ⟹ x = b.c/a Given: a = 3, b = 7, c = 9 x = 7.9/3 = 63/3 = 21
Answer: 3.5
Explanation The total number of students in the school is 360 boys + 240 girls = 600 students. The ratio of the number of boys to the total number of students is 360/600 = 3/5. This can also be written as a fraction as 3:5 or as a decimal as 0.6 .
Answer: 135
Explanation Total ratio parts = 5+12+3 = 20 Vanilla part = 3/20 Total cups = 900 Vanilla cups = (3/20) × 900 = 135 Last verified on 07-03-2026
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