Question

a student estimated a mass to be 250g but upon carefully measuring it found the actual mass to be 240g. what is the percent error?

Answer 1

Okay make an proportion: 240 x ____=________ 250 100 Now do 240×100=24000 24000÷250= 96 100-96=4 So 4%

Answer 2

Answer: 4.17%

Step-by-step explanation:

Given : A student estimated a mass to be 250g but upon carefully measuring it found the actual mass to be 240g.

The formula to find the percent error is given by :-

$\%\text{ error}=\dfrac{|\text{Estimated value - Actual value}|}{\text{Actual value}}\times100\\\\=\dfrac{|250-240|}{240}\times100\\\\=\dfrac{10}{240}\times100\\\\=4.16666666667\approx4.17\%$

Hence, the percent error = 4.17%