The length of a rectangle is 4 centimeters more than the width. if both the width and the length were tripled, the area would be 108 square centimeters. find the dimensions of the rectangle.

Since both the length and the width are tripled, the area will be nine times larger.  To counter this, divide by nine.  108/9=12  Divide this by 2 to get one length and one width.  You get 6.  1+5=6 and 1 is 4 smaller than 5, so the width of this rectangle is 1 cm and the length is 5 cm.