Question 1009585
{{{p-0.25p}}}
and then
{{{(p-0.25p)-0.2(p-0.25p)}}}
{{{p(1-0.25)-0.2p+0.2*0.25p}}}
{{{0.75p-0.2p+0.2*0.25p}}}
{{{p(0.75-0.2+0.2*0.25)}}}
{{{(0.75-0.2+0.05)p}}}
{{{(0.75-0.15)p}}}
{{{0.6p}}}


The final price became  60% of the original price, which is a 40% price reduction.