<PRE><B>Question 1124217</B>
A + B + C = 180
B = 4A
C = B + 18 = 4A + 18
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A + 4A + 4A + 18 = 180
9A = 162
A = 162/9 = 18
B = 4A = 72
C = B + 18 = 72+18 = 90
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Check:
A + B + C = 180
18 + 72 + 90 = 180 Correct</PRE>