Question

A student estimated a mass of 250grams, according to the scale the mass is actually 240grams. What is the percent error? (round to tenths place​

Answer 1

Answer:

4.2%

Step-by-step explanation:

percent error = (estimated value - actual value)/(actual value) × 100%

Here, the estimated value is 250 g, and the actual value is 250 g.

percent error = (estimated value - actual value)/(actual value) × 100%

percent error = (250 g - 240 g)/(240 g) × 100%

percent error = 10/240 × 100%

percent error = 0.041666... × 100%

percent error = 4.2%

Answer 2

Step-by-step explanation:

the real thing is 240 grams.

the estimation of 250 grams was 10 grams off.

how many % is that ?

for that we need to divide these 10 by 1%.

and 1% is 240/100 = 2.4 grams.

10 / 2.4 = 4.166666666... ≈ 4.2%

the percent error is 4.2%