Core TradesCâu 199 / 700
A roof has 2,400 square feet of surface area to be covered with three-tab asphalt shingles. At 3 bundles per square (100 sq ft), how many bundles are needed before adding any waste allowance?
a.24 bundles
b.48 bundles
c.72 bundles
d.80 bundles
Giải thích
2,400 sq ft equals 24 squares; 24 x 3 bundles = 72 bundles. The 24 answer counts squares not bundles, 48 uses 2 bundles per square, and 80 adds a waste factor that the question excludes.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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