math
posted by justin .
find the average
5/8,2/5,1/40

5/8 = 25/40
2/5 = 8/40
25/40 + 8/40 + 1/40 = 34/40
(34/40) / 3 = (34/40) * (1/3) = 34/120 = 17/60
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