Contact us
Choose a category below so we can get back to you as quickly as possible.
三個班共有學生47+48+49=144(人) 設一、二、三班各栽x、y、z棵,144∶576=47∶x x=188(棵) 144∶576=48∶y y=192(棵) 144∶576=49∶z z=196(棵)
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.