A group of friends go ice skating. They purchase one group ticket to get in and then each person rents skates and buys a hot chocolate. It costs
$
10
to purchase a group ticket to get into the skating rink.
It costs
$
4
per person to rent skates.
It costs
$
1.75
per person for hot chocolate.
How many friends go ice skating if they spend a total of
$
38.75
?