设甲乙相距x千米,汽车原速为a
x/a(1+20%)=150/a+(x-150)/a(1+30%)
x/1.2a=150/a+(x-150)/1.3a
1.3x=234+1.2(x-150)
1.3x=234+1.2x-180
0.1x=54
x=540
答:甲乙相距540千米.
设甲乙相距x千米,汽车原速为a
x/a(1+20%)=150/a+(x-150)/a(1+30%)
x/1.2a=150/a+(x-150)/1.3a
1.3x=234+1.2(x-150)
1.3x=234+1.2x-180
0.1x=54
x=540
答:甲乙相距540千米.