Increase 800 by 15%. What is the result?

Correct answer: C. 920

15% of 800 is 120 (10% is 80 and 5% is 40), so the result is 800 + 120 = 920. Adding 15 instead of 15% gives the wrong answer 815.

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Answer and explanation

The correct answer is C. 920

15% of 800 is 120 (10% is 80 and 5% is 40), so the result is 800 + 120 = 920. Adding 15 instead of 15% gives the wrong answer 815.