一条路第一天修了5分之1,第二天修4分之1.
(1)如果第一天修100米,这条路长多少米?
100/(1/5)=500m
(2)如果第二天修180米,这条路长多少米
180/(1/4)=720m
问题补充:(3)如果剩下110米,这条路长多少米?
110/(1-1/5-1/4)=200m
(4)如果第二天修20米,这条路有多少米?
20/(1/4)=80m
一条路第一天修了5分之1,第二天修4分之1.
(1)如果第一天修100米,这条路长多少米?
100/(1/5)=500m
(2)如果第二天修180米,这条路长多少米
180/(1/4)=720m
问题补充:(3)如果剩下110米,这条路长多少米?
110/(1-1/5-1/4)=200m
(4)如果第二天修20米,这条路有多少米?
20/(1/4)=80m