Question 1053826
Let {{{ x/100 }}} = the percent decrease
{{{ 1400 - ( x/100 )*1400 = 1000 }}}
{{{ 1400*( 1 - x/100 ) = 1000 }}}
{{{ 1 - x/100 = 5/7 }}}
{{{ 7/7 - x/100 = 5/7 }}}
{{{ -x/100 = -2/7 }}}
{{{ 7x = 200 }}}
{{{ x = 28.571 }}}
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The percent decrease is 28.57 %
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check:
{{{ 1400 - ( 28.571/100 )*1400 = 1000 }}}
{{{ 1400 - .28571*1400 = 1000 }}}
{{{ 1400 - 399.994 = 1000 }}}
Ok -error due to rounding off