2 |
5 |
1 |
6 |
把車速提高25%,車速變?yōu)樵瓉淼模?br>1+25%=
5 |
4 |
原定時(shí)間是:
2 |
5 |
4 |
5 |
=
2 |
5 |
1 |
5 |
=
2 |
5 |
=2(小時(shí));
再將速度提高
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3 |
1 |
3 |
4 |
3 |
行駛80千米后剩下路程的原定時(shí)間是:
1 |
6 |
3 |
4 |
=
1 |
6 |
1 |
4 |
=
1 |
6 |
=
2 |
3 |
甲、乙兩地相距:
80÷(2-
2 |
3 |
=80÷
4 |
3 |
=80×
3 |
4 |
=120(千米);
答:甲、乙兩地相距120千米.
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2 |
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1 |
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5 |
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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 |