Joe owns a sandwich shop. He charges $10.00 for two sandwiches and one drink and $6.50 for one sandwich and one drink. How much does Joe charge per sandwich? How much per drink?
To find out how much Joe charges per sandwich, we can subtract the cost of the drink from the total cost of a sandwich and the drink.
So, the cost of two sandwiches is $10.00 and the cost of one sandwich is $6.50.
Therefore, the cost of one drink is $10.00 - $6.50 = $<<10-6.5=3.50>>3.50.
This means that Joe charges $6.50 / 1 sandwiches = $<<6.5/1=6.50>>6.50 per sandwich and $3.50 / 1 drink = $<<3.5/1=3.50>>3.50 per drink. Answer: \boxed{6.50}.