Question

40%T-20=40%T/(1+25%)如何计算

Answer 1

方法1.方程40%T-20=40%T/(1+25%)可化为：

0.4T-20=0.4T/1.25

两边同乘以1.25,可得：

0.4T×1.25-20×1.25=0.4T

即0.5T-25=0.4T

0.1T=25

解得：T=250

方法2.方程40%T-20=40%T/(1+25%)两边同乘以5,可得：

2T-100=2T/(1+1/4)

2T-100=2T/(5/4)

2T-100=8T/5

两边同乘以5可得：

10T-500=8T

10T-8T=500

2T=500

解得：T=250