Homework Help: 7th grade math help Ms. Sue please

Posted by Delilah on Tuesday, November 27, 2012 at 5:52pm.

How do you find the sales tax of something? Here is one of my problems:

The price of three dolls are $12.99. What is the price of the dolls with a 5% sales tax? Show all of your work!

I cannot figure out how to put up an equation and solve this problem. Please help!

7th grade math help Ms. Sue please - Ms. Sue, Tuesday, November 27, 2012 at 5:54pm
12.99 * 1.05 = x

or -- if the dolls cost 12.99 each -- then ---

3(12.99)(1.05) = x
7th grade math help Ms. Sue please - Lila, Thursday, January 10, 2013 at 1:08pm
thanks but its

12.99*0.2 = 2.60 discount

12.99 - 2.60 = 10.39 new price

10.39 * 0.05 = 0.52 tax

10.39 + 0.52 = 10.91 price for each dolls
7th grade math help Ms. Sue please - Lila, Thursday, January 10, 2013 at 1:09pm
Am I correct
7th grade math help Ms. Sue please - Liliana Moneraz, Thursday, January 10, 2013 at 1:09pm
Yes I think it is thank you Lila
7th grade math help Ms. Sue please - Anyonamous, Thursday, January 10, 2013 at 1:10pm
I like your name Lila
7th grade math help Ms. Sue please - Lila, Thursday, January 10, 2013 at 1:10pm
thank you bye

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