Contact us
Choose a category below so we can get back to you as quickly as possible.
設電視機x臺 (1-20%)x-(1-20%)×87.5%x=60 0.8x-0.7x=60 0.1x=60 x=600 冰柜:600×87.5%=525(臺) 答:冰柜525臺,電視機600臺.
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.