SOLUTION: If the ratio of the length of a rectangle to its width is 5 to 3, and the length is 70 centimeters, find its width. (USE A PROPORTION TO SOLVE.) I need the equation and the solut

Algebra ->  Human-and-algebraic-language -> SOLUTION: If the ratio of the length of a rectangle to its width is 5 to 3, and the length is 70 centimeters, find its width. (USE A PROPORTION TO SOLVE.) I need the equation and the solut      Log On


   



Question 415854: If the ratio of the length of a rectangle to its width is 5 to 3, and the length is 70 centimeters, find its width. (USE A PROPORTION TO SOLVE.)
I need the equation and the solution checked out.

Answer by Mr.Math(29) About Me  (Show Source):
You can put this solution on YOUR website!
Let the width of a rectangle is "x".
Then the proportion will be the next:
5%2F3+=+70%2Fx
Express "x":
5x+=+3%2A70
5x+=+210
x+=+210%2F5+=+42
Answer: the width of a rectangle is 42 centimeters.