2 |
5 |
1 |
6 |
把车速提高25%,车速变为原来的:
1+25%=
5 |
4 |
原定时间是:
2 |
5 |
4 |
5 |
=
2 |
5 |
1 |
5 |
=
2 |
5 |
=2(小时);
再将速度提高
1 |
3 |
1+
1 |
3 |
4 |
3 |
行驶80千米后剩下路程的原定时间是:
1 |
6 |
3 |
4 |
=
1 |
6 |
1 |
4 |
=
1 |
6 |
=
2 |
3 |
甲、乙两地相距:
80÷(2-
2 |
3 |
=80÷
4 |
3 |
=80×
3 |
4 |
=120(千米);
答:甲、乙两地相距120千米.
1 |
3 |
2 |
5 |
1 |
6 |
5 |
4 |
2 |
5 |
4 |
5 |
2 |
5 |
1 |
5 |
2 |
5 |
1 |
3 |
1 |
3 |
4 |
3 |
1 |
6 |
3 |
4 |
1 |
6 |
1 |
4 |
1 |
6 |
2 |
3 |
2 |
3 |
4 |
3 |
3 |
4 |