Question

Seats of Mathematics, Physics and Biology in a school are in the ratio 4 : 5 : 8. There is a proposal to increase these seats by 50%, 20% and 25% respectively. What will be the ratio of increased seats?

• A. 3 : 2 : 4
• B. 3 : 5 : 7
• C. 5 : 7 : 9
• D. 3 : 3 : 5

Answer 1

Answer:

D. 3 : 3 : 5

The ratio of seats of Mathematics, Physics and Biology = 4 : 5 : 8 The required ratio of increased seats = 4 × 150/100 : 5 × 120/100 : 8 × 125/100 = 6 : 6 : 10 = 3 : 3 : 5