Answer:
$20.55
Step-by-step explanation:
The price of a fan is $15. This price is 27% lower than last week.
x = the price of the fan last week.
The price this week is 27% lower, so the price this week is (100 - 27)% of the price last week. The price this week is 73% of the price last week.
x * 0.73 = 15
Rearrange to find x.
x = 15 / 0.73
x = 20.5479452055
Round to the nearest cent.
x ≈ $20.55