A man walked diagonally across a square lot. Approximately, what was the percent saved by not walking along the edges? Choose the correct option.
A) 20%
B) 30%
C) 40%
D) 50%
E) 55%
Let the side of the square(ABCD) be x metres.   Then, AB + BC = 2x metres.   AC = 2x = (1.41x) m.   Saving on 2x metres = (0.59x) m.   Saving % = (0.59x)/2x	x 100	%	= 30% (approx.)   30%)
<result>B</result>
A man walked diagonally across a square lot. Approximately, what was the percent saved by not walking along the edges?