Answer: Choice B) 1/6 or 17%
Step-by-step explanation:
Ignore the net earnings of $4000 as it's extra unneeded info. The same goes for the $1500 rent.
Shay has monthly expenses of $3000. If the roommate chips in $500, then Shay saves 500/3000 = 5/30 = 1/6 of her money toward expenses.
Using a calculator, 1/6 = 0.17 = 17% approximately