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October 21, 2014

October 21, 2014

Posted by **KeKe** on Wednesday, October 17, 2012 at 8:29pm.

9. How many 3-cent stamps are there in 4 dozen?

- Math -
**Steve**, Wednesday, October 17, 2012 at 11:19pmit takes the mile-long train 1 minute to pass any fixed point at 60 mph.

So, it takes 1 minute for the front of the train to pass through the tunnel.

At that point, the caboose is just entering the tunnel.

After one more minute, the caboose has exited the tunnel.

Total time: 2 minutes

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