请求数学题[(x*5%)+(x*3%+2)+(x*0.2%)]=400求X

问题描述:

请求数学题[(x*5%)+(x*3%+2)+(x*0.2%)]=400求X

[(x*5%)+(x*3%+2)+(x*0.2%)]=400
x*(5/100+3/100+0.2/100)+2=400
x*(5/100+3/100+0.2/100)=400-2
x=(400-2)/(5/100+3/100+0.2/100)
x=4853.658537