Gil is reading a book that has 276 pages. He has already read some of it last week. He plans to read 20 pages tomorrow. By then, he will be

Let's see how StarMan may have arrived at that answer.

2/3rds of 276  = 184

And he only needs to read 20 pages tomorrow to have read 2/3rds of the book.

So.....184 - 20 = 164.......and that's how many pages he read last week.

164 pages i believe