A man tips a server 15% on meal costing $14.50. How much is the tip?

12.33

Step-by-step explanation:

Sale Price = $12.33 (answer). This means the cost of the item to you is $12.33. You will pay $12.33 for a item with original price of $14.50 when discounted 15%. In this example, if you buy an item at $14.50 with 15% discount, you will pay 14.50 - 2.175 = 12.33 dollars.

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.