The new saleswoman at clocks unlimited was very good. during her first day on the job she sold at least two of each of the three models that other salespeople found the most difficult to sell: the kitchen clock that sells for $17, the cuckoo clock that sells for $3 1, and the two-foot high grandfather clock that sells for $61. in all, she collected $300 from selling these models alone. how many $17 clocks did she sell? justify your answer