Question 267117
S = (1/2)m + 2
m = m
L = (3/2)m  - 2
P = 60
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P = short + middle + long
60 = (1/2)m  + 2 + m +(3/2)m - 2
combine like terms to get
 60 = 3m
divide to get
m = 20
s = 12
L = 28