SOLUTION: HELP please and thank you ^v^ There is a figure of a triangle with degrees a, b, and c. If a = 4b and c = 5b, what is the value of c ? (A) 18 (B) 50 (C) 72 (D) 90 (E) 9

Question 540661: HELP please and thank you ^v^
There is a figure of a triangle with degrees a, b, and c.
If a = 4b and c = 5b, what is the
value of c ?
(A) 18
(B) 50
(C) 72
(D) 90
(E) 98
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
a + b + c = 180 ___ sum of the angles of a triangle

substituting ___ (4b) + b + (5b) = 180 ___ 10b = 180 ___ b = 18
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