There are 248 pages in a book. Joanna can read 16 pages per hour. On Monday, she reads for 3 hours. On Tuesday, she reads for 6.5 hours. How many more hours does she need to read to finish the book?
On Monday, Joanna reads 3*16=<<3*16=48>>48 pages.
On Tuesday, Joanna reads 6.5 * 16 =<<6.5*16=104>>104 pages.
So far, she has read 48 +104 =<<48+104=152>>152 pages.
Thus, she has 248-152 = <<248-152=96>>96 pages left.
She will need to read for 96/16 = <<96/16=6>>6 hours to finish the book.
#### 6