A rectangular room has an area of 400 square foot. The length is 7 feet less than twice the width. How do you find the dimensions of the room?
You can put an equation to solve the problem:
where l is
Now you can solve the question.
w will be 16 feet.
I used trial and error method to find w. If you want, you can use quadratic formula to solve the question. If w is 16 ft,
It satisfies the equation.
Length is 25 ft and width is 16 ft.