Question 941960
Let {{{ P }}} = the perimeter in yds
It is assumed that the parking lot is a rectangle
The formula for perimeter is:
{{{ P = 2W + 2W }}}
{{{ 360 = 2W + 2L }}}
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{{{ L = W + 20 }}}
Substitute this into the formula for perimeter
{{{ 360 = 2w + 2*( W + 20 ) }}}
{{{ 360 = 2W + 2W + 40 }}}
{{{ 4W = 320 }}}
{{{ W = 80 }}}
The width is 80 yds
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check:
{{{ L = W = 20 ]]]
[[[ L = 80 + 20 }}}
{{{ L = 100 }}}
and
{{{ 360 = 2W + 2L }}}
{{{ 360 = 2*80 + 2*100 }}}
{{{ 360 = 160 + 200 }}}
{{{ 360 = 360 }}}
OK