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

anonymous · Answer

We have a Proportion !
we have :
perimeter 2w+2L so we divided 96 on 2 have : 48 so W+L=48
And then :
7_____________x
5_______________y
12_______48
What happen ? 48 * 4
so we *4 to 5 and 7 :
4*7=28
4*5=20
Got it ?:)
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