A recreation center offers a membership for $75. Members may take classes for $10 each. nonmembers must pay $15 for these classes. how many classes can a nonmember take and pay the same amount as a member?

If a member pays for 3 classes it will be $30 and if a nonmember for 2 classes it will be $30 dollars as well. Also, if a member pays for 6 classes it will be $60 and if a nonmember pays 4 classes it will be $60 as well