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? Let's think step by step and output the final answer after "####".
user
Lisa earned $60 * 1/2 = $<<60*1/2=30>>30.
Tommy earned $30 * 1/2 = $<<30*1/2=15>>15.
Lisa earned $30 - $15 = $<<30-15=15>>15 more than Tommy.
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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?
train