In a school, the seat ratio for Mathematics, Physics, and Biology is 5:7:8, respectively. It is proposed to increase these seats by 40%, 50%, and 75%, respectively. What will be the ratio of the increased seats?
A
6 : 8 : 9
B
6 : 7 : 8
C
2 : 3 : 4
D
None of these
Correct Option:
C
Explanation
Original Mathematics : Physics : Biology seats = 5:7:8. After the increases, the values become 5 × 1.40 = 7, 7 × 1.50 = 10.5, and 8 × 1.75 = 14. Thus the ratio is 7:10.5:14. Multiplying by 2 gives 14:21:28, which simplifies to 2:3:4.
