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

### Instruction:
 Macy's正在销售已降价至6美元的衬衫。这个价格是原价的25%。原价是多少？


### Response:
 原价是x。
折扣是100% - 25%剩余 = 75%折扣。
折扣是75%，所以原价是x - .75x = .25x。
售价是6美元，所以6 = .25x，即6/.25 = x。
原价是x = $<<24=24>>24。