Question

A scientist estimated that a mixture would need 3 milliliters of a chemical to balance. The actual amount needed was 7 milliliters. What was the percent error of the scientist's estimation?

A. 133.33%
B. 3%
C. 42.86%
D. 57.14%

Answer 1

Letter C is the answer

Answer 2

57.14%

Explanation:

Error(E)is defined as the percentage difference an estimate(e) amount is from the actual(a) amount. The actual amount need was 7 mililters and the estimate was 3 mililiters.

Error is defined as:

`E=(a-e/a)*100`

`E=(7-3/7)*100=57.14`

The percet error if the scientists estimation is 57.14%