A researcher estimates that a fossil is 3200 years old. Using carbon-14 dating, a procedure used to determine the age of an object, the researcher discovers that the fossil is 3600 years old. a. Find the percent error.

(Which I know is 11.1% with .1 repeating)

b. What other estimate gives the same percent error?

(I don’t know the answer to this question)

Please explain as well!