The perimeter of a rectangle is 96 ft. Find the dimensions of the rectangle if the ratio of the length to the width is 7: 5.
A. 30 ft by 18 ft
B. 28 ft by 20 ft
C. 24 ft by 24 ft
D. 22 ft by 26 ft

Question

The perimeter of a rectangle is 96 ft. Find the dimensions of the rectangle if the ratio of the length to the width is 7: 5.
A. 30 ft by 18 ft
B. 28 ft by 20 ft
C. 24 ft by 24 ft
D. 22 ft by 26 ft

kc_kennylau · Answer

These questions may help you think:
(a) If the length is 7k ft and the width is 5k ft, how would you express the sum of the length and the width?
(b) How would you express the perimeter in terms of k?
(c) Can you create an equation based on that?
(d) Can you solve that equation?
(e) Can you find 7k and 5k after you find k?