The ratio of milk and water in a pot is 3:4. If we add 10 litres milk and 10 litres water, then the ratio becomes 4:5. How much quantity of total mixt - Quantitative Aptitude & Reasoning MCQ Practice Test 2026 | ExamTest.live

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The ratio of milk and water in a pot is 3:4. If we add 10 litres milk and 10 litres water, then the ratio becomes 4:5. How much quantity of total mixture was present initially?

Solution & Step-by-step Explanation

Let the initial quantity of milk and water be 3 x and 4 x respectively. According to the question: \frac{3 x + 10}{4 x + 10} = \frac{4}{5} 5 (3 x + 10) = 4 (4 x + 10) 15 x + 50 = 16 x + 40 16 x - 15 x = 50 - 40 x = 10 Initial total mixture = 3 x + 4 x = 7 x = 7 \times 10 = 70 litres .

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The ratio of milk and water in a pot is 3:4. If we add 10 litres milk and 10 litres water, then the ratio becomes 4:5. How much quantity of total mixture was present initially?

70 litres

50 litres

80 litres

20 litres

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