# If 30 boys and girls went to the zoo and there were 6 more boys than girls, how many girls went to the zoo?

Dec 10, 2016

Let's get this into equations:

#### Explanation:

$B + G = 30$
$B = G + 6$

Substitute $B$:

$\left(G + 6\right) + G = 30 \to$
$G + 6 + G = 30 \to$ subtract 6 on both sides:
$G + G + \cancel{6} - \cancel{6} = 30 - 6 \to$
$2 G = 24 \to G = 24 / 2 = 12$

Answer : 12 girls (and 18 boys).