AB两地的距离 答案:(1)C地在ab两地之间:
设AB两地x km
x/(7.5+2.5)+(x-10)/(7.5-2.5)=4
x=20
(2)c地在ab两地外:
设ab两地x km:
x/(7.5+2.5)+(x+10)/(7.5-2.5)=4
x=20/3
答:AB两地相距20km或20/3km
AB两地的距离 答案:(1)C地在ab两地之间:
设AB两地x km
x/(7.5+2.5)+(x-10)/(7.5-2.5)=4
x=20
(2)c地在ab两地外:
设ab两地x km:
x/(7.5+2.5)+(x+10)/(7.5-2.5)=4
x=20/3
答:AB两地相距20km或20/3km