Question

Example #2 In a school, the number of ratio of boys and girls is 4 : 9. After inclusion of 32 new girls, the
ratio become 4 : 17. How many boys were present in the school?​

Answer 1

Step-by-step explanation:

4x/9x +32 = 4/17

68x= 36x + 128

32x = 128

x = 4

boys = 4×4 = 16