When a 120-lb woman stands on a snow-covered trail, she sinks slightly into the snow because the compressive stress between her ski boots and the snow is larger than the snow can support without crumbling. Her cross-country skis are 65 in. long and 1 7/ 8 in. wide. After estimating the dimensions of the boot’s sole, calculate the percentage reduction in stress applied to the snow when she is wearing skis instead of boots.