Practicing Success
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 ? |
21 : 14 : 15 5 : 7 : 8 39 : 35 : 40 7 : 2 : 21 |
39 : 35 : 40 |
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 |