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?	Choose the correct option:	A) 22:21	B) 19:22	C) 23:22	D) 22:19	E) 21:22
Let the number of boys and girls in the college be 7x and 8x respectively.   Their increased number=(120% of 7x) and (110% of 8x)   ==[(120/100)*7x] and [(110/100)*8x]   =(42x/5) and (44x/5)   The required ratio =(42x/5):(44x/5)   =21:22   Answer is option 21:22
<result>E</result>
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?