12楼炫炫爸
(......)
发表于 2005-11-6 11:23
只看此人
a hare and a tortoise are racing. They should cover a distance of 2,000m. the tortoise walks at a speed of 25 m per minute,while the hare can run at a speed of 325 m per minute. But the hare thinks he runs much faster than the tortoise, and he has a sleep during the way to the end. As a result, when the tortoise arrives the hare may have 400 m to go.
Question: How many minutes does hare sleep?
Answer: __________minutes..