Question

The width of a rectangular lot is 7 meters less than the length. The perimeter of the lot can be no more than 254 meters. What is the maximum length.

I know perimeter is 2w+2l
and width is l-7

Answer 1

Substitute w in terms of l

Answer 2

2(l-7)+2l=254?

Answer 3

Expand

Answer 4

And solve for l

Answer 5

expand? this: 2l-14+2l=254?

Answer 6

4l = 268
l = 67

Answer 7

^ thats what i did its wrong

Answer 8

no prob

Answer 9

wait hold on

Answer 10

what?

Answer 11

yup, i plugged it back in and got the answerr. so i had it right in the first place, just needed to go one step further. second guessed myself :)

Answer 12

thats right :)

Answer 13

thank you :)

Answer 14

dont mention it