Advanced MathEasy–MediumWidth of a garden twice as long as it is wide
Advanced Math practice question
A rectangular garden is twice as long as it is wide, and its area is 32 square metres. What is the width of the garden, in metres?
Answer: 4
With width w, the length is 2w and the area is 2w² = 32, so w² = 16 and w = 4.
Common wrong answers
- If you answered 8
- 8 is the length, not the width.
- If you answered 16
- 16 is w², not w.
- If you answered 5.66
- 5.66 is √32, forgetting the factor 2.
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For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
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