#### Answer

T = 61$\frac{1}{2}$ or 61.5 degrees

#### Work Step by Step

Using the formula T = 50 + $\frac{N - 40}{4}$, substitute the value given into the equation.
T = 50 + $\frac{86 - 40}{4}$
Solve for T:
T = 50 + $\frac{46}{4}$
T = 50 + 11$\frac{1}{2}$
T = 61$\frac{1}{2}$