There are 250 books inside a library. On Tuesday, 120 books are taken out to be read by children. On Wednesday, 35 books are returned. On Thursday, another 15 books are withdrawn from the library. How many books are now in the library?
On Tuesday, 120 books were taken out 250 - 120 = <<250-120=130>>130 books
On Wednesday, 35 books were returned 130 + 35 = <<130+35=165>>165 books
On Thursday, 15 books were borrowed 165 - 15 = 150 books
#### 150