Question 950025
In all triangles, the sum of the angles total 180 degrees.

Your problem says: 
C= B+18
A= 4B

Let's begin by solving for B:

B+B+18+(4B)= 180
2B+18+4B= 180
2B+4B= 180-18
6B= 162
B= 162/6

B= 27
C= B+18= 27+18= 45
A= 4B= 4*27= 108

Proof: 27+45+108= 180 We have the correct answer