Question

In a class of 35 students there are five more boys than girls how many boys are in the class?

Answer 1

let X be number of boys & y be number of girls in the class

x +y = 35 .....eq 1

x = y +5

y = x -5.......... eq 2

substitute eq 2 in eq 1

x + x -5 =35

2x = 40

x = 20

Answer 2

20 boys in class

Explanation:

easy

x+(x+5)=35

30=2x

x=15