Question

百分比怎么计算啊!100除以百分之75（8分之5-9分之5乘以百分之90+百分之25）乘以百分之20百分之380乘以1.

Answer 1

100除以百分之75

=100/75%

=100*(100/75)

=100*(4/3)

=400/3;

（8分之5-9分之5乘以百分之90+百分之25）乘以百分之20

=(5/8-5/9*90%+25%)*20%

=(5/8-50%+25%)*20%

=(5/8-25%)*20%

=(5/8-2/8)*20%

=3/8*(1/5)

=3/40

百分之380乘以1.2-百分之120+7.2乘以百分之120

=380%*1.2-120%+7.2*120%

=3.8*1.2+(7.2-1)*1.2

=1.2*(3.8+6.2)

=1.2*10

=12

将百分数看成分数(分母为100)或小数.