For this chain-of-thought reasoning and answer, what was the question?
Tom earns 3 lawns * $12 per lawn = $36 per month. Tom earned $36 + $10 = $46 last month. Tom's profit last month was $46 - $17 gas money = $29.
A: 29
Q: Tom has a job mowing lawns around his neighborhood. Each month he spends $17 on gas and mows 3 lawns, charging $12 per lawn mowed. Last month he also made extra money pulling weeds for $10. How much profit did Tom earn last month?