Question

there are two different ways to make $120 . for example ,you can use three $7 bills and nine $11
(3 x 7 + 9 x 11= 120) or you can use fourteen $7 bills and two $11 bills (14 x 7 + 2 x 11=120)

what is the largest amount of money that can be made in exactly one way?
explain why there is only one way to make a stack worth this amount.