# Xiao Ming read a book. He read one third of the whole book on the first day. On the second day, he read 24 more pages than on the third day. On the second and third day, the ratio of pages is 5:3. How many pages are there in this book?

## Xiao Ming read a book. He read one third of the whole book on the first day. On the second day, he read 24 more pages than on the third day. On the second and third day, the ratio of pages is 5:3. How many pages are there in this book?

The second day was 24 pages more than the third day, and the ratio was 5:3
Then the number of pages is 5 / 8-3 / 8 = 2 / 8, 24 / 2 / 8 = 96
The first day is 1 / 3, so the other two days are 1-1 / 3 = 2 / 3
So the whole book 96 / 2 / 3 = 144 (pages)

## Xiao Ming read a book. On the first day, he read 5 / 12 of the whole book, 1 / 8 less than the next day What part of the book did Xiao Ming read the next day? Please figure out the process-

5/12+1/8=10/24+3/24=13/24

## Xiao Ming finished reading a 240 page book in three days. On the first day, he read 1 / 5 of the whole book. On the second day, he read 5 / 8 of the whole book. On the third day, how many pages did he read?

The third day is 240 × (1-1 / 5-5 / 8) = 42 Pages