(1+15%)x+(1+10%)(50-x)=170怎么解?
问题描述:
(1+15%)x+(1+10%)(50-x)=170怎么解?
答
(1+15%)x+(1+10%)(50-x)=170
1.15x+55-1.1x=170
0.05x=115
x=2300