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QR question!

Discussion in 'DAT Discussions' started by dontbam, Jul 27, 2006.

  1. dontbam

    dontbam Member
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    An architect draws a blueprint so tha 3 and 1/8 inches represents 125 feet, how many square inches are used to represent the area of a room 20 ft by 20 ft?
     
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  3. wclubin

    wclubin Member
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    How many times does 125 go into 20?
    20/125 = 0.16
    Therefore 0.16 of 3 and 1/8 inch is how large each side of the square will be.
    3 and 1/8 is same as 3 + 1/8 therefore you say
    0.16(3 + 1/8) = 0.16(3) + 0.16(1/8) = 0.48 + 0.2 = 0.5 inches per side
    but the area of the square will be 0.5 X 0.5 = 0.25 square inches AKA 1/4 sq inches.
     

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