Taro began to walk toward the place 3200 m far from the starting point.
When he reduced the walking speed by 1/5 at the place where he walked by 1/4 of the distance, he reached 10 minutes later than the schedule.
Answer the following questions.
(1) After reducing speed, how many times is the time to walk the same distance comparing the time before reducing speed?
(2) How many minutes did it take after reducing speed for him to reach?
(3) Find the first speed.