5分之1乘以0.75加5分之4乘以百分之75,最后等于多少?
问题描述:
5分之1乘以0.75加5分之4乘以百分之75,最后等于多少?
答
5分之1乘以0.75加5分之4乘以百分之75
=1/5*0.75+4/5*0.75
=0.75*(1/5+4/5)
=0.75*1
=0.75