Contact us
Choose a category below so we can get back to you as quickly as possible.
前後單價之比:400:500=4:5,自行車的總數量為:4÷(56-45)=120(輛),總獲利:120×(500-400),=120×100,=12000(元).答:共盈利12000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.