Posted by Bryan on Tuesday, July 22, 2008 at 8:54pm.
Find the amount of sales tax and the total cost.
Cost of item Tax Rate
$500 6%
How do i do this problem?

Mathmatics  Ms. Sue, Tuesday, July 22, 2008 at 8:56pm
Multiply: $500 * 0.06 = tax
Add the tax to the cost of the item to find the total cost.

Mathmatics  Bryan, Tuesday, July 22, 2008 at 9:09pm
tx= 30
total cost = 530
Thanks, How do i find the percent notation of a fraction?
14 over 25

Mathmatics  Ms. Sue, Tuesday, July 22, 2008 at 9:11pm
Divide: 14 by 25.
Then multiply by 100 because percent means the number out of 100.
Or you can just move the decimal point two places to the right to get the percentage.

Mathmatics  Bryan, Tuesday, July 22, 2008 at 9:15pm
56% thanks
How do I solve for N?
2/10 = n/15

Mathmatics  Ms. Sue, Tuesday, July 22, 2008 at 9:21pm
You could set this up as a proportion and cross multiply.
2/10 = n/15
2*15 = 10n
30 = 10n
3 = n

Mathmatics  Bryan, Tuesday, July 22, 2008 at 9:25pm
SO the answear would be 2/10 = 30/15
because 2*15= 30

Mathmatics  Ms. Sue, Tuesday, July 22, 2008 at 9:36pm
Bryan  I showed you how to solve this problem.
2/10 = n/15
2*15 = 10n
30 = 10n <<Divide both sides of the equation by 10.
3 = n
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