He works 30/2=<<30/2=15>>15 days
So he works 15*12=<<15*12=180>>180 hours in the month
He got a 20*.3=$<<20*.3=6>>6 an hour raise
So he gets paid 20+6=$<<20+6=26>>26 an hour
That means he makes 26*180=$<<26*180=4680>>4680
#### 4680