Ellen wants to purchase a book that is regularly priced at $18. The book is discounted 15%. She also needs to pay a 6% sales tax on the discounted price.
What is the total amount Ellen will pay for the book?

Question

Ellen wants to purchase a book that is regularly priced at $18. The book is discounted 15%. She also needs to pay a 6% sales tax on the discounted price.
What is the total amount Ellen will pay for the book?

ilovepuppies · Answer

$18 - 15 + 6 = ?

danielannx3 · Answer

i think so let me try it thank you tho @ILovePuppies

danielannx3 · Answer

can someone help i multiply 0.15*18=2.70 so that give me 18-2.70=15.30
what do i do next

danielannx3 · Answer

@agent0smith

danielannx3 · Answer

@mathmate

danielannx3 · Answer

someone please help

agent0smith · Answer

If it's discounted 15%, that means it's 85% of it's original price. 

So find 85% of the original price.

Then find 6% of that new discounted price; that's the sales tax. Add it to the discounted price.

danielannx3 · Answer

so she will pay $4.32? @agent0smith

agent0smith · Answer

Almost definitely not... show your work. And do it in the order I suggested in the last post.

danielannx3 · Answer

0.85*18=15.30 
18-15.30=2.70
0.6*2.70=1.62
2.70+1.62=4.32
Thats what i got @agent0smith

agent0smith · Answer

You're doing some of the right working, but you didn't follow what I said. You did other steps that aren't correct. 

And 6% is not 0.6.

agent0smith · Answer

"find 85% of the original price.

Then find 6% of that new discounted price; that's the sales tax. Add it to the discounted price."

queenie · Answer

thats because there is 2 ways to do this....agent0smith is doing it the easiest way...
since it is 15% off, she is paying 85% for it.
so take 85% of 18...and then add 6% of 18 to that.
OR...
take 15% of 18...and subtract that from 18....then take 6% of 18..and add that to ur previous amount.