x⼀2400*40%⼀1-x⼀2400*40%=8% 求X?请问计算过程?

2026-05-19 07:10:02
推荐回答(1个)
回答1:

x/2400X40%/1-x/2400
X40%=8%
x/2400X2/5X2400/(1-x)
X2/5=2/25
2X2400X2x÷
〔2400X5(1-x)X5〕=2/25
4x=2/25〔5(1-x)X5〕
4x=2/25X5(1-x)X5
4x=2X5(1-x)X5/25
4x=2(1-x)
4x=2-2x
2x=1-x
3x=1
x=1/3