Question

) An 8th grade class has 4 more girls than boys. There are 18
students in the class. Which set of equations can help you
find the number of girls in the class?
You can earn 5 coins
b - g = 19 and b - 4 = g
b+19=gand b+ g = 4
b+ g = 19 and b + 4 = g
4+19 = g and 19 - 4 = b

Answer 1

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

Equations: b + g = 18 and g = b + 4.

Solve: b + (b + 4) = 18 → 2b + 4 = 18 → 2b = 14 → b = 7, so g = 7 + 4 = 11.

(So the correct system is b + g = 18 and b + 4 = g. None of the given choices match exactly.)