Planning & EstimatingCâu 594 / 700
A ceiling is 30 ft by 40 ft and will receive two coats of paint. If coverage is 400 sq ft per gallon per coat, what is the MINIMUM number of gallons to buy?
a.3 gallons
b.6 gallons
c.8 gallons
d.12 gallons
Giải thích
Ceiling area = 30 x 40 = 1,200 sq ft. Per coat: 1,200 / 400 = 3 gallons. Two coats: 3 x 2 = 6 gallons (b). Option (a) covers only one coat. Option (c) over-rounds. Option (d) mistakenly uses 200 sq ft per gallon coverage.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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