Posted by **Taylor** on Thursday, October 17, 2013 at 5:44pm.

Class ring:$89

Group discount:17%

Sales tax:5%

make sure to calculate the discount price first and then calculate the tax round to the nearest penny

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**Ms. Sue**, Thursday, October 17, 2013 at 5:49pm
What do YOU think you should do?

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**Taylor**, Thursday, October 17, 2013 at 5:50pm
idk i am really lost is it 77.56 idk can you please help me

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**Ms. Sue**, Thursday, October 17, 2013 at 5:51pm
Yay! You are absolutely right. The final cost is $77.56

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**Taylor**, Thursday, October 17, 2013 at 5:54pm
thank you

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**John **, Thursday, October 17, 2013 at 5:54pm
We need a 17% discount. We need a 5% discount as well. These discounts are on something valued at $89.

If you have a 17% discount, it means you get 100/100 - 17/100 = 83/100 off the original price.

In the same way, if you have a 5% discount, it means you have a 100/100 - 5/100 = 95/100 off the original price.

Combining these together, you multiply 83/100 * 95/100 * 89 dollars.

What is this equal to?

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**Ms. Sue**, Thursday, October 17, 2013 at 5:55pm
You're welcome.

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**Ms. Sue**, Thursday, October 17, 2013 at 5:59pm
John -- The 5% is not a discount but a tax.

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**John **, Thursday, October 17, 2013 at 6:01pm
Oh right, I'm sorry.

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