Given the question in the question tab, the original selling price can be calculated by:
Step 1: State the price of the set after the discount has been given
[tex]\text{Selling price (new)=\$840}[/tex]
Step 2: The 10% discount of the original price (p) will be:
[tex]\frac{10}{100}\times p=0.1p[/tex]
Step 3: The discount was removed from original price (p), so we have:
[tex]p-0.1p=\text{Selling price (new)}[/tex]
Step 4: Write the new formula for the price, we have:
[tex]\begin{gathered} p-0.1p=840 \\ 0.9p=840 \\ p=\frac{840}{0.9} \\ p=943.333333 \\ p\approx\text{\$}943.33 \end{gathered}[/tex]
Hence, the original selling price for the set of 10 golf clubs is approximately $943.33 to the nearest cent.