Answer:
8.5%
Explanation:
The formula for Percentage error =
[|Measured value - Real value |/Real value] × 100
Measured value = Estimated value = $480.
Real value = $524.50
Percentage error =
[|480 - 524.50|/524.50] × 100
=[ |-44.5|/524.50] × 100
= [44.5/524.50] × 100
= 8.484270734%
≈ 8.5%
Therefore the percentage error in the bill = 8.5%