Use the following equations to find the amount of males and females in the class:
x represents the males in the class, and y represents the females in the class.
Because x = y + 4, we can substitute x in the first equation:
Combine like terms.
Subtract 4 from both sides.
Divide both sides by 2 to get y by itself.
Because we know what y is, we can plug in its value into the first equation:
Subtract 12 from both sides to get x by itself.
There are
16 males and 12 females in the class.