Rebecca will make 30 * 4 = $<<30*4=120>>120 from haircuts today.
She will make 60 * 2 = $<<60*2=120>>120 from dye jobs.
She will spend 10 * 2 = $<<10*2=20>>20 on hair dye.
With the $40 perm and tips, at the end of the day, Rebecca will have 120 + 120 + 40 - 20 + 50 = $<<120+120+40-20+50=310>>310.
#### 310