Given the demand for a product as Qd = 100 − 5P and the supply is given as Qs = -20 + 3P. You are told equilibrium is obtained at the point where Qd = Qs. The equilibrium price for the product is

Given the demand equation $Qd = 100 - 5P$ and the supply equation $Qs = -20 + 3P$.
At equilibrium:

$$Qd = Qs$$ $$100 - 5P = -20 + 3P$$

Add $5P$ to both sides of the equation:

$$100 = -20 + 3P + 5P$$ $$100 = -20 + 8P$$

Add 20 to both sides of the equation:

$$100 + 20 = 8P$$ $$120 = 8P$$

$$P = \frac{120}{8}$$ $$P = 15$$

The equilibrium price for the product is 15.

The final answer is $\text{15}$