Question 570898
Let {{{ p }}} = the original price
The 1st markdown makes the price
{{{ p - .2p = .8p }}}
The 2nd markdown makes it
{{{ .8p - .3*.8p = .8p*( 1 - .3 ) }}}
{{{ .8p*( 1 - .3 ) = .7*.8p }}}
{{{ .7*.8p = .56p }}}
The 3rd markdown makes it
{{{ .56p - .1*.56p }}}
{{{ .56p*( 1 - .1 ) }}}
{{{ .56*.9p }}}
{{{ .504p }}}
The 4th markdown makes it
{{{ .504p - .2*.504p }}}
{{{ .504p*( 1 - .2 ) }}}
{{{ .504*.8p }}}
{{{ .4032p }}}
given:
{{{ p = 49.99 }}}
{{{ .4032*49.99 = 20.16 }}}
Hope bought the jeans for $20.16