(X+100)÷(x+1000)=15%拜托了各位
问题描述:
(X+100)÷(x+1000)=15%拜托了各位
答
(x+100)÷(x+1000)=15% x+100=0.15(x+1000) x+100=0.15x+150 0.85x=50 x=1000/17
(X+100)÷(x+1000)=15%拜托了各位
(x+100)÷(x+1000)=15% x+100=0.15(x+1000) x+100=0.15x+150 0.85x=50 x=1000/17