Contact us
Choose a category below so we can get back to you as quickly as possible.
一臺答錄機原價300元,連續兩次降價5分之1,現在的價錢是多少元? 300×(1—5分之1)×(1—5分之1) =240×5分之4 =192(元) 答:現在的價錢是192元.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.