Below is an instruction that describes a task. Write a response that appropriately completes the request in Chinese. Please answer in Chinese.

### Instruction:
 Liza每小时读20页，Suzie每小时读15页。Liza在3小时内比Suzie多读了多少页？


### Response:
 Liza每小时读20页，Suzie每小时读15页。
Liza每小时比Suzie多读5页。
所以Liza在3小时内比Suzie多读了3 x 5 = <<3*5=15>>15页。