Calculate the the selling price of the following: Original price $=\$ 25$ Markup $=40 \%$

Step 1 ：Given that the original price of the item is \( \$25 \) and the markup percentage is \( 40\% \).

Step 2 ：The markup value is calculated by multiplying the original price by the markup percentage. So, the markup value is \( \$25 \times 40\% = \$10 \).

Step 3 ：The selling price of the item is calculated by adding the markup value to the original price. So, the selling price is \( \$25 + \$10 = \$35 \).

Step 4 ：Final Answer: The selling price of the item is \(\boxed{35}\).