数学题加英语题A boys has finished reading 160 pages of a story book and he finds that there is 20% of the book left.How many pages are there in the book?是什么意思?怎么解题?
2019-03-30
数学题加英语题
A boys has finished reading 160 pages of a story book and he finds that there is 20% of the book left.How many pages are there in the book?是什么意思?怎么解题?
优质解答
那个男孩子读完了一本书的160页,但是他发现书的20%页丢失了.那么书里到底有多少页.
160页存在的占80%
全本书就是160处以0.8=200页
答案是200pages
那个男孩子读完了一本书的160页,但是他发现书的20%页丢失了.那么书里到底有多少页.
160页存在的占80%
全本书就是160处以0.8=200页
答案是200pages