6.- The Old-Students-from-Tec Club is 65 years old now. They plan to celebrate the 75^th anniversary really big: the party is calculated to cost $25 million. To raise money they will raise money in this years reunion and in the reunion five years from now. The expectation is that this year they will get $4 million, in 5 years they will get $8 million. If there is not enough money raised, the members will pay the rest at the time of the party (in 10 years from now). The money will be put in a bank account immediately, for an interest rate of 13% per year.

Is there enough money for the party, or should the members pay additional money to reach the $25 million ? If so: how much ?