
Jason S. answered 09/18/14
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C=2m
m = (j-3)
Substitute j-3 for m...
C = 2(j-3)
C = 2j - 6
Since C= 2j -6 and m=j-3, substitute both in c+m+j = 91
(2J - 6) + (J-3) + J = 91
2J + J + J - 6 - 3 = 91
4J - 9 = 91
4J = 100
J = 25
M = J - 3 = 25-3 = 22
C = 2M = 2(22) = 44