| 7 |
| 8 |
(2)甲车返回时速度为原来的(1+25%),即
| 5 |
| 4 |
| 4 |
| 5 |
| 4 |
| 5 |
(3)相遇后,甲乙两车的速度比变为:[8×(1+25%)]:7=10:7,
当甲车返回A地时,甲又行了全程的
| 8 |
| 15 |
| 8 |
| 15 |
| 7 |
| 10 |
| 28 |
| 75 |
则A、B两地相距:
35×
| 4 |
| 5 |
| 7 |
| 15 |
| 28 |
| 75 |
=28÷
| 7 |
| 75 |
=300 (千米).
答:A、B两地距离是300千米.
故答案为:35,50,5:4.
| 4 |
| 5 |
| 7 |
| 8 |
| 5 |
| 4 |
| 4 |
| 5 |
| 4 |
| 5 |
| 8 |
| 15 |
| 8 |
| 15 |
| 7 |
| 10 |
| 28 |
| 75 |
| 4 |
| 5 |
| 7 |
| 15 |
| 28 |
| 75 |
| 7 |
| 75 |