Selling cell phones

Question

Suppose you are selling phones and want the price of each phone to be $159.00 including a
sales tax of 6%.

 

(a) Write an equation representing the statement above. 

(b) How much should your pre-tax price be? 

 

(c) How much would the total cost of a phone be if you had to raise your pre-tax price to $160?

Answer 1

Total price = Selling price + .06*selling price

$159 = 1.06*selling price

selling price = $150

Tax = $9

 

c. 160 + 160%.06 = $169.60