Originally, let the number of seats for Mathematics, Physics and Biology be 5
x, 7
x and 8
x respectively.
Number of increased seats are (140% of 5x), (150% of 7x) and (175% of 8x).
⟹ |
❨ |
140 |
x 5x |
❩ |
, |
❨ |
150 |
x 7x |
❩ |
and |
❨ |
175 |
x 8x |
❩ |
100 |
100 |
100 |
∴ The required ratio = 7x : |
21x |
: 14x |
2 |
⟹ 14x : 21x : 28x
⟹ 2 : 3 : 4.