(8*5)/(1-5/60)=40/(1-1/12)=40/(11/12)=40*(12/11)=480/11=43又(7/11)分钟表上8点到9点之间,时针和分针在8点43又(7/11)分时重合.(8*5-15*(60/360))/(1-5/60)=(40-15/6)/(1-1/12)=(40-2.5)/(11/12)=37.5/(11/12)=37....