Margie calculated that she would spend $175 on school supplies this year. She actually spent $97.50 on school supplies. What is Margie’s percent of error?

77.3%
79.5%
44.2%
4.4%

Question

Margie calculated that she would spend $175 on school supplies this year. She actually spent $97.50 on school supplies. What is Margie’s percent of error?

 77.3%
 79.5%
 44.2%
 4.4%

anonymous · Answer

@johnweldon1993 !!!!!!

anonymous · Answer

I want to make sure im right!

johnweldon1993 · Answer

What'd you get? :)

anonymous · Answer

B??

anonymous · Answer

79.5?

johnweldon1993 · Answer

How did you get that?

johnweldon1993 · Answer

Ehh nvm, I just like showing the process haha you're correct :P

anonymous · Answer

$$\frac{ 77.5 }{ 97.5 }\times100 =79.48717949 $$

johnweldon1993 · Answer

$$\large \color \red \checkmark$$ BAM!

richgall____ · Answer

its actually C

richgall____ · Answer

i was looking at similar problems like yours and most ppl cam up with 44.2

anonymous · Answer

but also $$175-97.50=77.5$$

johnweldon1993 · Answer

$$\large \text{% Error} = \frac{\text{Theoretical Value - Experimental Value}}{\text{Theoretical Value}}$$

richgall____ · Answer

yea ik but u have to find the percent of what 77.5 was of that

richgall____ · Answer

why would they make the problem that simple i mean come on

anonymous · Answer

$$\frac{ 77.5 }{ 97.5 }=79.48717949$$ there you go :P :)

richgall____ · Answer

now i understand it better lol okay ;)

johnweldon1993 · Answer

I believe what other people are thinking...is

$$\large \frac{97.5}{175} = 55.7 \text{   Percent}$$

That is the amount she was correct...so they think 1 - that = 44.3 would be the percent she is wrong...but that is an incorrect observation

anonymous · Answer

lol :)

anonymous · Answer

yup :) <3