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A rectangle is 3 m longer than wide and has area 40 m². What is its width?
A6 m
B4 m
C5 m
D8 m
Answer & Solution
Correct answer: C. 5 m
w(w + 3) = 40 gives w² + 3w - 40 = 0, so w = 5 since 5 times 8 is 40.
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