An investigation into subways foot-long sandwiches found that some sandwiches measured 11 3/4 inches. What is the percent error of those sandwiches from the advertise length
To find the percent error, we need to calculate the difference between the measured length and the advertised length, and then divide that by the advertised length. Finally, we multiply the result by 100 to convert it to a percentage.
The advertised length of the foot-long sandwich is 12 inches.
The difference between the measured length (11 3/4 inches) and the advertised length (12 inches) is:
12 - 11 3/4 = 12 - (11 + 3/4) = 12 - 11 - 3/4 = 1/4 inches.
Therefore, the percent error is:
(1/4 inches / 12 inches) × 100% = (1/4) × 100% = 25%.
So, the percent error of those sandwiches from the advertised length is 25%.