This is embarrassing.. went to a Hobby Lobby job interview.. and flunked the math test.. ack! this involved percentages..how do you get 66% off of a total, and like tax % 7.5 we are not allowed to use a calculator

- anonymous

- katieb

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- anonymous

66% off would be the
original price - .66(original price)
7.5% tax would be .075(price)
So the total would be
(1 + .075)(1-.66)price

- anonymous

Thank you Polpak... and to further show how bad I am at this.. do you multiply the -.66 from the original price? and like wise with the tax?

- anonymous

I am very right brained..not so left.

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## More answers

- heisenberg

i'm not sure what you mean. when you see a term in parentheses though, that does mean multiply.
or if you want to think of it another way:
66% off = 34% of the original price = .34 * price

- anonymous

Heisenberg, thank you.. I'll see if that works , for my brain ..

- anonymous

This is what I came up with... 20.00 original price, 66% off would be 13.20 off leaving the price of 6.80??

- heisenberg

that's right!

- anonymous

Really?!?! Goodie!! wow.. I'm encouraged..:)
I will try another one..

- anonymous

Ok... On the total of 6.80 and if the tax is 7.5% that tax total would be .90 ?

- heisenberg

not quite. you may have just messed up the multiplication. the equation is .075 * 6.8

- anonymous

Ok.. I think I messed up yet again.. here is what I did.. 6.80 x .075 came up with 50000 and I don't know where to put the decimal, and I think the .075 is that the 7.5 percent for tax?

- heisenberg

well you should have gotten 51000 ;)
as far as the decimal place goes, the number of places after the decimal in the answer will be equal to the total number of places after the decimal in the operation.
the operation is: 6.80 * .075
there are 5 total places after the decimal point in that operation.
so you would need 5 spots for the decimal point in the answer. start at the right and count over 5 places. put a decimal there :)

- anonymous

Ok.. I was right in thinking about places to count over for the decimal... but I messed up the multiplication or the adding.. I can paint portraits..*L* I'll keep working on this.. thank you. I'll do another.

- heisenberg

no problem

- anonymous

This is my next "thing" 27.99 and 30% off... I come up with 7.60 off making the price at 20.39 ... now if I didn't mess that up.. I did for sure on this.. taking 7.5 %tax I came up with an insane number of 152925 and if I put the decimal four slots over, I came up with 15. 29 which even in this economy is WRONG! what did I do..

- heisenberg

i have to run for a minute, but!
27.99 * .3 = 8.397
so you may want to try that again
this may be a good piece of info to know. converting a percentage to a decimal:
7.5 % = .075

- anonymous

thank you I will keep you in mind.. STARS!!! FANS for you.. I will keep working

- anonymous

ok... I think I got the 30% .3 I did that on paper, got the same thing you did.. yeah!!!! I took the balance of 19.60 and multiplied .075 and got 1.47000 or 1.47 is that right?

- anonymous

Ok.. trying another.. 27.99 @ 15% off, is... 27.99 x .15? = 4.19 and that would be 23.80? and 7.5% tax on that would be..1.78 ?

- anonymous

good thing I didn't apply for a bank job! *LOL*

- anonymous

This is how I figured out the 15%.. 10 is 1/10 of the dollar.. .05 is *L* Five cents.. and If I had 17.00 item.. and needed 15 % off.. I went about it.. 1.70 for the 10% and took .05 x 17 = .85 added the two.. 2.55 for the 15%... is this right or wrong.. and its really hard to think and keep all of it straight. is the 15% .15?

- anonymous

Did I get it right? and welcome back. I will be doing this stuff all weekend.. I just want to make sure I get the formula right.. can't be that different than making brownies!! gr

- heisenberg

yup 15% of $17 is $2.55
there is a really good online calculator at http://www.wolframalpha.com/ if you want to check things like that. but i am happy to help too.

- anonymous

I really need to know the formulas down pat.. some interviews.. will not let you use a calculator, and well, I don't understand the calculators all that well..

- anonymous

I got the 15% ? right? Woohoo.. Is there a way I can scan work, and send it so you could check my work?

- anonymous

If I get one page of problems right.. I'll be thrilled

- heisenberg

sure. you can post any problems you have here and upload attachments with them. if i'm not around, i'm sure plenty of people will be here able to help :)

- anonymous

Thank you very much.. you're more understandable than PolPack though I appreciated what he tried to help me with.. I was able to utilize your info better. Hope to run into you again.. have a great weekend!

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