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

### Instruction:
 莎莉正在为她的童子军团的筹款活动销售饼干盒子。如果她在星期天的销量比星期六多50％，那么她在两天内总共卖出150盒。她在星期六卖了多少盒子？


### Response:
 设星期六卖出的盒子数为S。
S+1.5S=150
2.5S=150
S=<<60=60>>60
莎莉在星期六卖出了60盒子。