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

### Instruction:
Lisa, Jack, and Tommy earned $60 from washing cars all week. However, half of the $60 was earned by Lisa. Tommy earned half of what Lisa earned. How much more money did Lisa earn than Tommy?

### Response:
 Lisa alipata $60 * 1/2 = $<<60*1/2=30>>30.
Jack na Tommy walipata $60 - $30 = $<<60-30=30>>30.
Tommy alipata $30 * 1/2 =$<<30*1/2=15>>15.
Lisa alipata $30 - $15 = $<<30-15=15>>15 zaidi ya Tommy.