甲、乙两个修路队修一条长11.7千米的公路，甲队每天修1.8米，修了4天后，余下的公路由乙队修完。乙队每天修1.5千米，还需要几天修完？(t(R0x(B5[5V9z,J4s
算式：提示9E-o4\,[8V*g'w9R7f2E:N(t(R0x(B5[5V9z,J4s
答：还需要*d2O8u)u9h天修完。(t(R0x(B5[5V9z,J4s