0.3:x =5分之1:51
问题描述:
0.3:x =5分之1:51
答
根据内项积=外项积得:
x/5=51•(0.3)
x/5=15.3
x=76.5不对吧...........................................................内项:x,1/5 相乘得:x/5外项:0.3,51相乘得:15.3