此題需要把低於36個或多於36個想進去 (1) Last week Bob was paid a total of $480 for the items that he produced that week. 設last week =y item if y<36 -->xy=480 if y>36-->à 36x+1.5x(y-36)=480 (2) This week Bob produced 2 items more than last week and was paid a total of $510 for the items that he produced this week. This week =y+2 If y+2<36-->à x(y+2)=510 if y+2>36--> 36x+1.5x(y-34)=510 (1)+(2)