there are b boys in the class.this is 3 more than 4 times the number of girls. how many girls are there in the class.?

2 answers

b = 4 g + 3

That is all I can say without the other half of the problem.
number of boys ---- b
number of girls ----- g

b = 4g + 3
b-3 = 4g
g= (b-3)/4

e.g.
let the number of boys be 43
then girls = (43-3)/4 = 10

4 times the number of girls plus 3 = 4(10)+3 = 43
which is the number of boys