Question

The length of a rectangle is 4 centimeters more than its width. if the ratio of the length to width is seven to five, find the dimensions of the rectangle

Answer 1

l = 4 + w
l/w = 7/5
l = 7w/5

7w/5 = 5 + w
7w = 25 + 5w
2w = 25
w = 12.5

l = 4 + 12.5
l = 16.5

the dimensions are 16.5 x 12.5 cm