3.Isabella had a week to read a book for a school assignment.She read an average of 36 pages per day for the first three days and an average of 44 pages per day for the next three days.She then finished the book by reading 10 pages on the last day.How many pages were in the book?( )
Isabella學(xué)校作業(yè)是一個星期讀完一本書。她在前三天平均每天讀了36頁,接下來的三天平均每天讀了44頁。然后,她在最后一天讀了10頁并讀完了這本書。這本書有多少頁?( )