Patrick L. answered 09/24/20
AA in Mathematics with 5+ Years of Tutoring Experience
K = Kirk
B = Brian
M = Matt
X = manager
K + B + M + X = 106
K = 2(X - 10)
B = 2X - 12
M = 0.5X + 6
2(X - 10) + 2X - 12 + 0.5X + 6 + X = 106
2X - 20 + 2X - 12 + 0.5X + 6 + X = 106
5.5X - 26 = 106
5.5X = 132
X = 24
K = 2(24 - 10) = 2(14) = 28
B = 2(24) - 12 = 48 - 12 = 36
M = 0.5(24) + 6 = 12 + 6 = 18
28 + 24 + 36 + 18 = 106
Kirk is 28 years old. Brian is 36 years old. Matt is 18 years old. The manager is 24 years old.