It takes 10*1.5=<<10*1.5=15>>15 hours to fix his shirts
It takes 1.5*2=<<1.5*2=3>>3 hours per pair of pants
So it takes 3*12=<<3*12=36>>36 hours for the pants
That means in total it takes 15+36=<<15+36=51>>51 hours
So it cost 51*30=$<<51*30=1530>>1530 to fix everything
#### 1530