Give the step-by-step reasoning process and then the final answer. A club is going to get additional members so that they will have 5 more than twice their current number of their members. If the club has 10 members now, how many additional members do they need?
Twice the current number of members now is 10 * 2 = 20 members. So, the club wants to have 20 + 5 = 25 members. Therefore, they need to get 25 - 10 = 15 members.
The final answer: 15.