4) Paolo bought an item getting a $15 \%$ discount on the original price and paid 106.25 Euros. What was the original price?
(A) Less than 123 Euros
(B) 124 Euros,
(C) 125 Euros,
(D) 127 Euros,
(E) More than 128 Euros.
4. The answer is $\mathbf{( C )}$.

If we denote the original price of the item by $x$, the discounted price of $15 \%$ can be written as $\frac{100-15}{100} x=\frac{17}{20} x$. Therefore, $x=\frac{20}{17} \times 106.25$ euros $=\frac{2125}{17}$ euros $=125$ euros.