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?
Tom earns 3 lawns * $12 per lawn = $<<3*12=36>>36 per month.
Tom earned $36 + $10 = $<<36+10=46>>46 last month.
Tom's profit last month was $46 - $17 gas money = $<<46-17=29>>29.
#### 29