修一条路200米，修了2天，平均每天修25米。余下的计划每天修30米，还要几天修完？(z7}9^)A0E:Z3P(\6M;e(O/O-x
算式：提示3U.d2N6e1?.J(z7}9^)A0E:Z3P(\6M;e(O/O-x
答：还要5w-W3Q7@:I(m5\'t9k9h3Y天修完。(z7}9^)A0E:Z3P(\6M;e(O/O-x