Multiple choice

125 litres of mixture of A and B contains A and B in the ratio 3:2 . How much B should be added so that the ratio of A and B becomes 3:4 ?

  1. 50

  2. 150

  3. 100

  4. 75

  5. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total = 125L. Ratio A:B = 3:2. A = 75L, B = 50L. We want A:B = 3:4. Since A remains 75L, 75/B_new = 3/4. B_new = (75 * 4) / 3 = 100L. Added B = 100 - 50 = 50L.

AI explanation

In a 125 liter mixture with a ratio of 3:2, the quantity of A is 3/5 of 125, equaling 75 liters, and the initial quantity of B is 50 liters. Let the amount of B to add be x, so the new ratio of A to B is 75 divided by (50 + x), setting it equal to 3/4. Solving 300 = 150 + 3x yields x = 50.

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