The total mechanical and electrical unit costs for a library are listed as $40 per square foot, while total project cost is estimated at $119 per square foot. Based on these values, the percentage of total costs represented by mechanical and electrical costs is closest to: (choose one)
(a) 21%
(b) 29%
(c) 34%
(d) 38%
Percentage of total cost = 40/119 = 33.6%
Answer is (c) 34%
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