Question 263103
a rectangle is twice as long as it is wide
translates as
(i) {{{W = 2L}}}
the perimeter is 60 feet
translates as
(ii) {{{60 = 2L + 2W}}}
by substitution we get
(iii) {{{60 = 2L + 2(2L)}}}
solving for L, we get
(Iv) {{{60 = 6L}}}
and L = 10 ft
So W = 20 ft