Question

Erika calculated that she would spend $115 on school supplies this year. She actually spent $82.50 on school supplies. What is Erika’s percent of error?

28.3%
2.8%
39.4%
32.5%

Answer 1

@welshfella

Answer 2

I suggest taking the estimated total of 115$ and convert it to 1 percent by dividing it by 100 to get 1.15$.

Answer 3

First you need to answer this question:
82.5 is what percent of 115?
Then you need to subtract what you get from 100.

Answer 4

You could then multiply your 1% by each of your answer choices and which ever one that when added with the actual amount spent (82.50) equals 115 is the answer.

Answer 5

Sorry put the wrong percentage here is the actual answer I solved for what 82.5 percent of 115 was rather than 82.5 is what percentage.

Answer 6

Actual percentage is 71.73913043478261

Answer 7

im confused??

Answer 8

first work out 115 - 82.5
Then as a fraction the error is this difference / 115

The percentage error is this value times 100.

Answer 9

Now subtract from 100

Answer 10

ohh @welsh

Answer 11

@welshfella

Answer 12

Therefore your answer is A

Answer 13

the error as a fraction is (115 - 82.5) / 115
Multiply this by 100 to give you the answer

Answer 14

its 28.2608696 @welsh so its 28.3

Answer 15

correct