Discriminant to Find Nature of Roots

A marching band is looking for a new section of lead trumpets. However, in order to get the best sound they need a certain number of players. The following equation was calculated to ensure the best sound:

$$\frac{5x^2+10}{x} = 20,$$

where $x$ is the number of trumpet players. How many trumpet players should the marching band include? If you get a decimal answer, round down to the nearest, POSITIVE whole number.