# Question #cee7d

Aug 16, 2017

The vampires won 12 games.

#### Explanation:

This is basically a system of equations problem. If we use the letter W to represent the number of wins, and the letter L to represent losses, the info we're given is below:

$W + L = 20$
They played 20 games, so their wins and losses must add to 20.

$W = L + 4$
They won 4 more than they lost.

Since we know that $W = L + 4$, we can substitute $L + 4$ in for $W$ in the first equation.

$L + 4 + L = 20$
$2 L + 4 = 20$
$2 L = 16$
$L = 8$

They lost 8 games, which means they won 12 (just adding 4).