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March 1, 2015

Posted by **PLEASEEEEE** on Sunday, October 9, 2011 at 7:22pm.

- Math -
**Ms. Sue**, Sunday, October 9, 2011 at 7:47pmUse this proportion. Cross multiply and solve for x -- the time it takes the front of the train to go through the tunnel.

15/60 = 1/x

15x = 60

x = 60/15 = 4 minutes for the front of the train to go through the tunnel.

It takes the rear of the train the same time.

- Math -
**Biped**, Tuesday, November 12, 2013 at 9:02pm7.5 min

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