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

### Instruction:
 房子1有12张地毯，房子2有20张地毯，房子3有10张地毯。如果房子4有房子3的两倍地毯，那么四个房子总共有多少张地毯？


### Response:
 房子4有2 x 10 = <<2*10=20>>20张地毯。
房子1有12张地毯，房子2有20张地毯，房子3有10张地毯，房子4有20张地毯，所以四个房子总共有12 + 20 + 10 + 20 = <<12+20+10+20=62>>62张地毯。