6/1乘以百分之60+8/1乘以百分之40

问题描述:

6/1乘以百分之60+8/1乘以百分之40

没有简便方法
6/1乘以百分之60+8/1乘以百分之40
=3.6+3.2
=6.8
还是
60%×1/6+40%×1/8
=10%+5%
=15%
=0.15