6/14=x/20 cross multiply and get 14x=120 divide and get 8 2/30
To find the sales tax multiply the purchase price by the sales tax rate. Remember to convert the sales tax rate from a percent to a decimal number. Once the sales tax is calculated, it is added to the purchase price. The result is the total cost—this is what the customer pays.
Answer:
K = 
Step-by-step explanation:
P = KTV
Divide both sides by TV
(P/TV) = K