Seats for Chemistry , Physics and Biology in a school are in the ratio 9 : 7 : 8. There is a proposal to increase these seats by 30%, 50% and 50% respectively. What will be the ratio of increased seats ?
Answer & explanation
Correct answer: option 3
ATQ,
Chemistry Physics Biology
ratio 9 : 7 : 8
let Actual value 90 : 70 : 80
New 90 × 130% : 70 × 150% : 80 × 150%
⇒ 117 : 105 : 120
⇒ 39 : 35 : 40