Question

Instead of multiplying a number by 0.72, a student multiplied it by 7.2. If his answer was 2592 more than the correct answer, then the original number was

• A. 400
• B. 420
• C. 500
• D. 560

Answer 1

Answer:

A. 400

(7.2-0.72) x=2592=>0.72-9 * x=2592 => x=400