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train puzzle

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alison6399 | 12:32 Mon 27th Aug 2007 | Quizzes & Puzzles
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A 330-yard train travelling at 50mph enters a tunnel of two miles in length. How long will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?

Please show all workings. Thanx
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3.2 minutes
2.0 mls + 330yds x 2 = 2.375 mls

2.375 / 50 x 60 = 2.85 minutes.

My maths is very rusty nowadays, so suggest you await one of the experts to either agree or show the correct answer??
I was making 330 yard to be .225 of a mile, but using an online converter it is .19mile.
60/50 is 1.2 x 2.19 makes 2.63 minutes.
grasscarp 330yds is 0.1875 mls i.e. 330 / 1760.
2.54 minutes(?)
Revised estimate: 2.2 miles at 50mph = 2.42 minutes
I wrongly included 330yds twice in my initial solution .. it should be 2.0 +330yds = 2.1875 mls

2.1875 / 50 x 60 = 2.625 minutes.
Sarumite is right: I misread my circular slide-rule - again!
Yep, 2.625 minutes
Hi Sarumite. I rounded up .1875 to .19, and I rounded up the final answer 2.625 to 2.63, so I think we are all in agreement.

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