Saved Bookmarks
| 1. |
The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio? |
| Answer» Originally, let the number of boys and girls in the college be 7x and 8x respectively. Their increased number is (120% of 7x) and (110% of 8x). 120 x 7x and 110 x 8x 100 100 42x and 44x 5 5 The required ratio = 42x : 44x = 21 : 22. 5 5 | |