###Human: 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?, ### Assistant: Janine read 5 x 2 = 10 books this month.
So, she read a total of 5 + 10 = 15 books.
Therefore, she read 15 x 10 = 150 pages in all. 
 So the answer is :  150