Janine read 5 books last month. This month, she read twice as many books. If each book has 10 pages, how many pages did Janine read in two months?
Janine read 5 x 2 = <<5*2=10>>10 books this month.
So, she read a total of 5 + 10 = <<5+10=15>>15 books.
Therefore, she read 15 x 10 = <<15*10=150>>150 pages in all.
#### 150