Question

There are 17 more girls than boys. There are 431 students in all. How many boys are there

Answer 1

Let g= number of girls, and b= number of boys

g = 17 + b

431 = g + b

so, after substitution

431 = (17+b) + b

431 = 17 + 2b

Solve for b, and you will get your answer.