A wall needs to be covered with wallpaper except for 2ft on each of its four sides. If the cost of a wallpaper is $27 per sq ft, what will the cost of covering the wall with the wallpaper be?
A
$80
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B
$90
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C
$98
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D
$88
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Solution
The correct option is D$88 Length of the wall to be covered with wallpaper = length of the wall –4ft
(Because 2ft is left out on both sides) =26–4=22ft
Width of the wall to be covered with wallpaper = width of the wall –4ft
(Because 2 ft is left out on both sides) =18–4=14ft
Area of the wall to be covered with wallpaper = length of the wall covered with wallpaper × width of the wall covered with wallpaper =22×14=308sqft
Cost for covering the wall with wallpaper = area of the wall to be covered with wallpaper × cost of wallpaper per sq ft