Contact us
Choose a category below so we can get back to you as quickly as possible.
設原價是x元. x(1-21分之4)=204 21分之17x=204 x=204÷21分之17 x=252 答:原價252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.