Question

The width and length of a rectangle (in feet)are consecutive odd integers. If the length is increased by 5 feet, the area of the resulting rectangle is 60 square feet. What is the area of the original rectangle?



25 ft2
30 ft2
35 ft2

Answer 1

original area is \(n(n+2)\)
new area is \(n(n+7)=60\)

Answer 2

this tells you \(n=5\) and so the original area is \(5\times 7=35\)