Question

The parking lot behind Kai's Kafe has a perimeter of 210 m. The width is three-fourths of the length. What are the dimensions of the parking lot?

Answer 1

P(L)= (7/2)L

Answer 2

Generally, P=2L+2w for rectangles with length L and width w.

w=3/4*L, so we substitute it in for w.
210=2L+2(3/4*L)
Now, we solve.
210=2L+6/4L
210=4/2L+3/2L
210=7/2L
***60=L***
w=3/4L
w=3/4*60
***w=45***

The parking lot is 60m by 45m.