Question 950758
He lost {{{ .1*10000 = 1000 }}} leaving
{{{ .9*10000 = 9000 }}} men
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He lost {{{ .15*9000 = 1350 }}} leaving
{{{ .85*9000 = 7650 }}} who marched
back down the hill
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{{{ 7650 / 10000 = .765 }}}
{{{ .765*100 = 76.5 }}}
76.5% of the men were left