(10 pts) Bonnie, Tony and Nicky plan to buy a new amp for their band. The amp costs $300. Each of of the band members has saved $200 in $10 bills. They decide that each of them will begin by contributing $50 in $10 bills. (That is, everyone contributes at least $50 to the purchase.) Then, each of them will contribute some amount more money to reach the required $300 to buy the amp. For each me {Bonnie, Tony, Nicky} we denote by am the number of $10 bills that band member m is left with after they buy the amp. Count the number of possible triples (a Bonnie, a Tony, (Nicky)