Mathmatics
posted by Bryan on .
Find the amount of sales tax and the total cost.
Cost of item Tax Rate
$500 6%
How do i do this problem?

Multiply: $500 * 0.06 = tax
Add the tax to the cost of the item to find the total cost. 
tx= 30
total cost = 530
Thanks, How do i find the percent notation of a fraction?
14 over 25 
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. 
56% thanks
How do I solve for N?
2/10 = n/15 
You could set this up as a proportion and cross multiply.
2/10 = n/15
2*15 = 10n
30 = 10n
3 = n 
SO the answear would be 2/10 = 30/15
because 2*15= 30 
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