Answer:
$26.99
Explanation:
17.50 original cost plus a 54.2% increase
First, divide percentage by 100 to get a decimal to divide by 54.2/100=0.542
Then multiply the new decimal by the original cost to find the amount marked up. 17.50 x 0.542= 9.485
Now add 9.485 to the original cost
17.50+9.485=26.985-> 26.99 rounded for the final answer