Use the following equations to find the amount of males and females in the class:
[tex]x + y = 28[/tex]
[tex]x = y + 4[/tex]
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:
[tex]x = y + 4[/tex]
[tex]y + 4 + y = 28[/tex]
Combine like terms.
[tex]2y + 4 = 28[/tex]
Subtract 4 from both sides.
[tex]2y = 24[/tex]
Divide both sides by 2 to get y by itself.
[tex]y = 12[/tex]
Because we know what y is, we can plug in its value into the first equation:
[tex]x + 12 = 28[/tex]
Subtract 12 from both sides to get x by itself.
[tex]x = 16[/tex]
There are 16 males and 12 females in the class.
