Question

There are four more girls than boys in Ms. Raub's class of 2828 students. What is the ratio of number of girls to the number of boys in her class?

Answer 1

number of girls be G
and number of boys be B
A/q
B +4 = G
and B +G = 2828
⇒B +4 + B = 2828
⇒2B = 2824
⇒B = 1412
so G = 1416
ratio = 1416/1412 =  = 354:353

Answer 2

Let the no.of boys be x
then no.of girls = x+4
Given total students = 28
⇒ x+x+4 = 28
⇒ 2x+4 = 28
⇒ 2x = 28 - 4
⇒ 2x = 24
⇒ x = 24/2
∴ x = 12
∴ no.of boys = x = 12
No.of girls = x+4 = 12+4 = 16
The ratio of no.of girls to the boys = 16:12
                                                      = 4:3