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

### Instruction:
 Sandra有一箱苹果，重120磅。她打算用一半的重量的苹果做苹果酱。剩下的将用来做苹果派。她每个派需要4磅的苹果。她能做多少个派？


### Response:
 Sandra将用60磅的苹果来做苹果酱，所以剩下的苹果重量是120磅 - 60磅 = <<120-60=60>>60磅。
她每个派需要4磅的苹果，所以她能做60磅 / 4磅 = <<60/4=15>>15个派。