Exams › IBPS PO › Quantitative Aptitude

If the number of balls in V is 25% more than the number of balls in S and the ratio of the number of red to black balls in V is 3:2, then find the difference between the number of red and black balls in V.

1. 4
2. 7
3. 6
4. 8

Correct answer: 6

Solution

If the red:black ratio in V is 3:2, then the total number of balls in V must be divisible by 5. Since the intended total is 30, the red and black counts are 18 and 12, so the difference is 6.

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