Finding Angle B in a Triangle

In a given triangle, the measures of two angles are given as follows:

Angle A = $45^{ ext{°}}$

Angle B = $x^{ ext{°}}$

Angle C is three times the measure of Angle B. What is the measure of Angle B?

Use the triangle angle sum property, which states that the sum of the angles in a triangle must equal $180^{ ext{°}}$.