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

### Instruction:
A company has 100 employees. 60% of the employees drive to work. Of the employees who don't drive to work, half take public transportation.  How many employees use public transportation to get to work?

### Response:
 ขับรถไปทำงาน: 100(.60)=60 คน
ไม่ขับรถไปทำงาน: 100-60=<<100-60=40>>40 คน
ใช้รถโดยสารสาธารณะเดินทางไปทำงาน: 40(.50)=20 คน