Question

某人以八折的優惠價購買一套服裝省15元，那么某人購買這套服裝時，用了   

元。······················································································································ （  ）

A．35    B．60    C．75　　 D．150

 

 

Answer 1

答案：B
解析：

設用了x元，則x(1-0.8)=15,x=75

提示：

原價乘以0．8即八折