6×2.88%x=（16000-x）6.21%×8×50%
∵6*2.88%=0.1728
6.21%×8×50%=0.2484
∴原式化简为
0.1728x=(16000-x)0.2484
0.1728x=16000*0.2484-0.2484x
(0.2484+0.1728)x=16000*0.2484
0.4212x=3.9744
x=9.4359 6×2.88%x=（16000-x）6.21%×8×50%
∵6*2.88%=0.1728
6.21%×8×50%=0.2484
∴原式化简为
0.1728x=(16000-x)0.2484
0.1728x=16000*0.2484-0.2484x
(0.2484+0.1728)x=16000*0.2484
0.4212x=3.9744
x=9.4359