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: Math: Questions asked about Probability
Explanation In RPM Operator paper held on 07-12-2023 questions ask about about Probability
Answer: 20:15:12
Explanation Let 3x = 4y = 5z =k x = k/3 ,y =k/4 ,z =k/5 x : y : z = k/3 : k/4 : k/5 x : y : z = 20 :15 :12 Sh1-9-2023
Answer: 20cm
Explanation 20 km → 5 cm 80 km → ? Scale factor: 80/20 = 4 times So, 5 cm × 4 = 20 cm Last verified on 09-02-2026
Answer: 11:24
Explanation To express 27 minutes 30 seconds and 1 hour in ratio: Step 1: Convert both times to seconds 27 minutes 30 seconds = (27 * 60) + 30 = 1620 + 30 = 1650 seconds 1 hour = 60 minutes = 60 * 60 = 3600 seconds Step 2: Calculate the ratio Ratio = 1650 : 3600 To simplify, divide both parts by their greatest common divisor, which is 150: = (1650 / 150) : (3600 / 150) = 11 : 24
Answer: 12
Explanation Since the ratio of cats to dogs is 2:3, we can write: Number of cats / Number of dogs = 2/3 We know there are 18 dogs, so: Number of cats / 18 = 2/3 Cross-multiply: Number of cats = (2/3) × 18 Simplify: Number of cats = 2 × 6 Number of cats = 12 So, there are 12 cats.
Answer: -24 and -28
Explanation Given that two numbers are in the ratio of 6:7 and their sum is -52, we can determine the numbers as follows: let the two numbers be 6x and 7x. The sum of these numbers should be -52: 6x + 7x = -52 13x = -52 Solving for x: x = -52/13 x = -4 Therefore, the two numbers are 6x and 7x: 6 (-4) = -24 7 (-4) = -28 The numbers in the ratio 6:-7 that sum up to -52 are -24 and -28.
Answer: 4:5
Explanation Let third number = x First number = 120/100 x = 6x/5 Second number = 150/ 100x = 3x/2 Ratio of two numbers = 6x/5 : 3x/2 = 12x : 15x = 4:5
Answer: 33
Explanation Let the smaller number be 3x and the larger number be 5x, since their ratio is 3:5. When 9 is subtracted from each number, the new numbers are 3x - 9 and 5x - 9. The ratio of these new numbers is 12:23, so we can set up the equation: (3x - 9) / (5x - 9) = 12/23 Cross-multiplying and simplifying the equation, we get: 69x - 207 = 60x - 108 Solving for x, we get: 9x = 99 x = 11 So, the smaller number is 3x = 3(11) = 33 .
Answer: 48cm
Explanation A ladder slides 12cm in 3 minutes. it will slide 48cm in 12 minutes Sh6-8-2023
Answer: 16/63
Explanation Given: Portrait dimensions: 7 feet wide × 9 feet long Frame width: 2 inches = 2 /1 2 = 1 /6feet Step 1: Find the area of the portrait (without frame) Area = 7 × 9 = 63 square feet Step 2: Find the total dimensions including the frame Since the frame is on all sides: Total width = 7 + 2 ( 1 6 ) × 2 = 7 + 2 3 = 21 3 + 2 3 = 23 3 7 + 2left(frac{1}{6}right) times 2 = 7 + frac{2}{3} = frac{21}{3} + frac{2}{3} = frac{23}{3} Total length = 9 + 2 ( 1 6 ) × 2 = 9 + 2 3 = 27 3 + 2 3 = 29 3 Step 3: Find the total area including the frame Total area = 23 /3 × 29 /3 = 667.9 = 74.11 square feet Step 4: Find the area of the frame Area of frame = Total area − Portrait area = 74.11 − 63 = 11.11 square feet Step 5: Find the ratio of the frame area to the portrait area Ratio = Area of frame. Area of portrait = 11.11/63 = 16/63 Thus, the correct answer is (c) 16/63 .
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