Contact us
Choose a category below so we can get back to you as quickly as possible.
一堆煤有3噸,20天燒完,平均每天燒3/20噸,平均每天燒這堆煤的20分之1
1-23=13;25÷13=65(噸).答:還剩13,這堆煤有65噸.
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.