Question 4880
Let length = x
Length width = y


we know that x+x+y+y=160 --> 2x+2y=160


Also, x/4 = 2y --> x = 8y.


Put this second equation into the first, to give 2(8y) + 2y = 160
16y+2y = 160
18y = 160
y = 80/9
y = 8.89 ft (to 2dp)


--> as x = 8y, we get x = 71.11 (to 2dp)


Check: add 2 lots of each length --> do you get 160?


jon