Question

I just need someone to check this for me

Answer 1

Sally estimated that her call would take twenty-one minutes but it actually took fifteen minutes. What was her percent of error?
is it 40%

Answer 2

howd you get 40?

Answer 3

i got like 71%

Answer 4

Ask Sally

Answer 5

its supposed to be 15/21 for your answer than just move the two decimal places over

Answer 6

percent error = what you got/ over what you were supposed to get

Answer 7

wait i screwed it up

Answer 8

Yes, yes you did

Answer 9

Its not one of my choices though

Answer 10

I think I should find the percent of change

Answer 11

Is that right?

Answer 12

the percent of change? so it was expected to be 21, and it was 15 right? 15 is 72% of 21. So it is 28% different

Answer 13

(15-21)/21*100

Answer 14

oh shyte klownlove has the percent error formula im doing percent yield, im used to chem

Answer 15

;)

Answer 16

(v2-v1)/v1*100 is the formula for percent of change

Answer 17

so it should be 28.6 because i have to round to nearest tenths

Answer 18

Thank you to everyone who helped