Question 407757
If woman can walk {{{x}}}mph, then she can ride {{{(x+10)}}} mph (because she can ride 10 mph faster than she can walk)
Woman ride 28 miles by {{{28/(x+10)}}} hours, and can walk 8 miles by {{{8/x}}} hours.
Equation
{{{28/(x+10)=8/x}}}
{{{28x=8(x+10)}}}
{{{28x=8x+80}}}
{{{20x=80}}}
{{{x=80/20}}}
{{{x=4}}}
Woman can walk 4mph