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

### Instruction:
 一辆校车以每小时50英里的速度行驶了42分钟。这辆校车行驶了多少英里？


### Response:
 1分钟等于1/60小时，所以42分钟等于42/60 = <<42/60=0.7>>0.7小时。
因此，这辆校车行驶的距离是50*0.7 = <<50*0.7=35>>35英里。