The owner of Sack of Suds paid his cashier $60 when he was actually owed only $42. What was the

owner's percent error? (Round your answer to the nearest tenth.)

Answer: 42.9%

Step-by-step explanation:

Percent error is the difference between the measured and known value, which is divided by the known value, and then multiplied by 100%.

Percent error = (Estimated number - Actual number) / Actual Number * 100.

= (60 - 42) / 42 * 100

= 18/42 * 100

= 0.429 * 100

= 42.9%