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 increased seats ?

2 : 3 : 4

ATQ,

               Mathematics              Physics              Biology

Actual               50            :         70          :           80

New             50 × 140%    :    70 × 150%   :       80 × 175%

⇒                 50 × 14        :      70 × 15      :       8 × 175

⇒                      2            :         3             :          4