操場一圈200公尺,恬恬以每秒5公尺的速率,繞了學校操場2圈,要花多少時間?

2017-03-09 5:41 pm

回答 (2)

2017-03-09 5:58 pm
✔ 最佳答案
time
=200*2/5
=80s
2017-03-25 8:41 pm
(200*2)/5
=400/5
=80(s)
80/60
=1min20s


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