Answer: -7.408%
Explanation: The formula for percent error is:
(experimental - theoretical) / theoretical * 100. The experimental value is 50, or your guess. The theoretical value is 54, or the actual value. The theoretical value is the value it should be.
(50-54)/54 = -.074 * 100 = -7.408%
Can you provide a visual so that it is easier to solve?
64 pages
divide 40 by 5 for pages printed in 1 minute then multiply this by 8
× 8 = 8 × 8 = 64 pages