Exams › IBPS PO › Quantitative Aptitude

Seats for Mathematics, Physics, and Biology in a school are in the ratio $5:7:8$. There is a proposal to increase these seats by 40%, 50%, and 75% respectively. What will be the ratio of the increased seats?

1. 2: 3: 4
2. 6: 7: 8
3. 6: 8: 9
4. None of these

Correct answer: 2: 3: 4

Solution

The new numbers are proportional to $5\times1.4$, $7\times1.5$, and $8\times1.75$. These become 7, 10.5, and 14, which reduce to $2:3:4$. This is a standard ratio after percentage increase problem.

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