If two people can install 75 square feet of siding per hour, how long will it take four people working at the same speed to side a house with walls of 16 feet by 20 feet, 15 feet by 20 feet, 20 feet by 18 feet, and 11 feet by 20 feet?
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The Answer is 16' * 20' = 320 sq. ft 15' * 20' = 300 sq. ft. 20' * 18' = 360 sq. ft. 11' * 20' = 220 sq ft. Total = 1200 sq. ft. divided by 150 sq. ft. per hour = 8 hours

If Two People Can Install 75 Square Feet of Siding