## Elementary Algebra

We are told: $A = 5B \\ B+ C = A - 60$ Since it is a triangle, we know: $A + B + C =180$ Substituting $B+C = A -60$, we obtain: $A + A - 60 = 180 \\ A = 120$ Thus, we find: $A = 5B \\ B = \frac{120}{5} = 24$ Finally, we find C: $C = 180 - A -B = 180 - 120 - 24 = 36$