The cheese that Ms.Carter used to buy cost $6.00 per pound originally.
After it is marked up 15%, the cheese's per pound price will become:
$6+15% of $6 which can be calculated as:
Dollars
Therefore, to buy 2.6 pounds of cheese at this new price of $6.9 per pound, it will cost:
$6.9 per pound
2.6 pounds=$
=$17.94