Stamp Collection Problem

Alice, Bob, and Charles are each collecting stamps. Alice has twice the number of stamps Bob has, and Charles has 5 more stamps than Bob. If the total number of stamps they have combined is 65, how many stamps does Alice have?

Let the number of stamps Bob has be represented by b. Then Alice has 2b stamps, and Charles has b + 5 stamps. The equation representing the total number of stamps is:

$$ b + 2b + (b + 5) = 65 $$