2012 · Q57
The area of a rectangle whose length is 5 more than twice its width is 75 square units. What is the perimeter of the rectangle?
Elementary MathematicsMensuration
- A40 units
- B30 units
- C24 units
- D20 units
Explanation
(2w+5)w = 75 gives w = 5 and length 15, so perimeter = 40 units.