Respuesta :
Stephan spent $145.20 I believe because 115+17=132 and to make it easier, 10% of 132 is 13.2(it’s like multiplying 132 by 0.1) and 100% of 132 is 132 so then you just take 132 and add 13.2 to get $145.20 and how much money he made would be $13.20