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

### Instruction:
 Justin可以在1.5分钟内跑2个街区。如果他离家8个街区远，他需要多少分钟才能跑回家？


### Response:
 Justin可以跑4组两个街区。
因此，他需要跑回家的时间是4 x 1.5 = <<4*1.5=6>>6分钟。