# Math Help - Percentage Error !! urgent

1. ## Percentage Error !! urgent

The mass of a piece of steak is 500g to the nearest 10g. The percentage error of this measurement is:
A) 1%
B) 50%
C) 5%
D) 10%

2. Originally Posted by thecoasterfreak
The mass of a piece of steak is 500g to the nearest 10g. The percentage error of this measurement is:
A) 1%
B) 50%
C) 5%
D) 10%
A.
solution: the mass is between 495 and 504
mathematically, it is 499.5 +- 4.5.
therefore, percentage error is (4.5/499.5)*100% = .9% ~= 1%