问题描述:
GMAT数学题请说明理由哇
InTownX,64percentofthepopulationareemployed,and48percentofthepopulationareemployedmales.WhatpercentoftheemployedpeopleinTownXarefemales?
A.x0516%
B.x0525%
C.x0532%
D.x0540%
E.x0552%
问题:
问题描述:
GMAT数学题请说明理由哇
InTownX,64percentofthepopulationareemployed,and48percentofthepopulationareemployedmales.WhatpercentoftheemployedpeopleinTownXarefemales?
A.x0516%
B.x0525%
C.x0532%
D.x0540%
E.x0552%
高桥清回答:
LettotalpopulationbeP.LetemployedpeoplebeE=0.64PandsoemployedmaleisEM=0.48P,thereforeemployedfemaleEF=E-EM=0.16P,soEFisabout0.16P/0.64P=0.25oftheemployedpeoplei...