Answer:
18.18%
Step-by-step explanation:
-Percent error is defined as the deviation as a percentage of the actual value.
#Given the actual sold units is 110 and the predicted is 90, the percent error can be calculated as:
[tex]\bigtriangleup=110-90\\\\=20\\\\\therefore \% \bigtriangleup=\frac{20}{110}\\\\=0.1818 \ \ or \ \ \ 18.18\%[/tex]
Hence, the perecent error is 18.18%
