A rectangular lot measures 40 feet by 30 feet and contains a shed with a 10 foot square base. How much of the lot is left as open ground?
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Correct!
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Correct answer to question 117 (Arithmetic Reasoning): 1,100 square feet
Method
The lot covers 40 x 30 = 1,200 square feet and the shed occupies 10 x 10 = 100, leaving 1,100 square feet. The choice 1,190 subtracts the shed's perimeter instead of its area.
Updated: November 2026
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