Answer:
$3
Explanation:
$13.99 is for one hour and one hour is for 3 children. This means they paid a total of 3 hours.
$13.99 * 3 = $41.97 for admission alone
Now our total is $50.97
Let's subtract that from admission to find sock price in total
$50.97-$41.97 = $9
Again, 3 children and each for a pair, so lets divide that $9 by 3 for each child.
$9/3 = $3