In a school, the ratio of the number of boys and girls is 3:4 respectively. If the number of boys increased by 10% and the number of girls increased by 15%, then what is the new ratio of the number of boys and girls?

$\frac{33}{46}$

                              Boys  :  Girls 

Original ratio             3     :     4        

Increased ratio         3x\(\frac{110}{100}\)  :    4x\(\frac{115}{100}\)

                                66   :    92    =  33 : 46