In a batch of 60 shipments, 3 address digits incorrect. What is the error rate expressed as a percentage?

• A. 3%
• B. 5%
• C. 6%
• D. 2%

Answer: (B)

To find the error rate, treat it as a proportion of the total and convert to a percentage. With 3 errors out of 60 shipments, divide 3 by 60 to get 0.05. Multiply by 100 to express as a percent, giving 5%. So the rate is 5%.

The other options would imply fractional errors (for example, 3% corresponds to 1.8 errors, 6% to 3.6 errors, 2% to 1.2 errors), which isn’t possible here, confirming 5% as the correct rate.