求助!一道GMAT数学题
Ifanorganizationweretosellnticketsforatheaterproduction,thetotalrevenuefromticketsaleswouldbe20percentgreaterthanthetotalcostsoftheproduction.Iftheorganizationactuallysoldallbut5percentofthentickets,thetotalrevenuefromticketsaleswaswhatpercentgreaterthanthetotalcostsoftheproduction?
正确答案说是14%,但不知道是怎么求出来.我以为是20%*95%=19%,不知道正确的公式应该是什么呢?