Mathes 10points!!!!!!

2007-05-08 6:45 am

A run 6m/s ,B run 5m/s ,A run 10 mins B need how many mins?????

回答 (5)

2007-05-08 7:16 am

✔ 最佳答案

A走10分鐘,即走了10×60×6=3600米,
B要走3600米,即要走3600÷(5×60)=12分鐘,
所以B要走12分鐘!

希望我的數學知識可以幫到你!

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2007-05-08 6:54 am

B need
6 X 10 / 5
=12mins

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2007-05-08 6:53 am

Distance: 6X10x60=3600m
B needs
3600
￣￣
5
=720s

720
￣￣
60
=12 mins

參考: my knowlege

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2007-05-08 6:52 am

追唔到!! 因為A的速率,比B的快，所以就算一起開步也追不到。

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2007-05-08 6:52 am

A:6*10=60m
B:5*x=60
x=12mins
so B needs 12mins

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