Hallie works a total of 7 + 5 + 7 = <<7+5+7=19>>19 hours
For her hourly pay, she earns 19 * $10 = $<<19*10=190>>190
In tips, she receives a total of $18 + $12 + $20 = $<<18+12+20=50>>50
The total amount of money Hallie earns is $190 + $50 = $<<190+50=240>>240
#### 240