Correct Answer: Option C
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)x7x) and ((110/100) x 8x)
=> 42x/5 and 44x/5
So, The required ratio = 42x/5 : 44x = 21 : 22.
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