Question 114791
{{{(100p - 4000)/100p=0.3}}}
{{{100p - 4000=0.3(100p)}}} Multiply both sides of the equation by 100p.
{{{100p - 4000=30p}}}
{{{100p -30p - 4000=0}}} Subtract 30p form both sides of the equation. 
{{{70p - 4000=0}}}
{{{70p=4000}}}Add 4000 to both sides of the equation.
{{{p=4000/70}}} Divide both sides of the equation by 70. 
{{{p=57.14}}}