Question

The ninth grade class has 431 students all together. There are 17 more boys than girls. How many girls are there?

Answer 1

Step-by-step explanation:

let girls are x

so boys are x + 17

x+x+17=431

2x + 17=437

2x = 420

x = 210

so girls are 210

Answer 2

let girls x

boys x+17

$x + x + 17 = 431 \\ 2x + 17 = 431 \\ 2x = 431 - 17 \\ 2x = 414 \\ x = 414 \div 2 \\ x = 207$

Ans:207 girls are ninth class