Question

The Mulraneys hired a contractor to build an addition to their home. The Contractor proposed a rectangular room with an area of 300 square feet. The Mulraneys asked the contractor to change the area to 363 feet by increasing both the length and the width by the same percentage. By what percent did the Mulraneys ask the contractor to increase the length of the room?

Answer 1

The answer is....increased by 10% <------

Answer 2

300=xy and 363=(xr)(yr)=xyr^2 so

363/300=xyr^2/(xy)

1.21=r^2

r=1.1

So the dimensions were increased by 10%