Answer with Explanation:
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).
=>(120/100 x 7x) and (110/100 x 8x)
=> 42x/5 and 44x/5
Therefore,The required ratio = (42x/5 : 44x/5) = 21 : 22.
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).
=>(120/100 x 7x) and (110/100 x 8x)
=> 42x/5 and 44x/5
Therefore,The required ratio = (42x/5 : 44x/5) = 21 : 22.