Author Topic: If a train leaves a station... (Read 1424 times)

Dglider · March 28, 2014, 10:28:23 AM

A freight train leaves a station at 3:00 travelling at 30mph. A passenger train leaves the station at 4:00 traveling at 50 mph. At what time will the passenger train pass the freight train? (Or smash into it, if that's how your imagination works in this particular scenario.)

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Steve5451� · March 28, 2014, 10:29:41 AM

I think I can solve this, but I'm running on twenty minutes of sleep and I have school. No thank you!

Eden · March 28, 2014, 10:30:58 AM

AM or PM?

Treynolds416 · March 28, 2014, 10:34:20 AM

intersection of y = 30x + 30 and y = 50x

x = 1.5
So, 5:30

Kimono · March 28, 2014, 10:34:46 AM

1.5 hours (5:30

Quote from: Treynolds416 on March 28, 2014, 10:34:20 AM

intersection of y = 30x + 30 and y = 50x

x = 1.5
So, 5:30

god damnit

Xalos · March 28, 2014, 10:45:40 AM

There are a lot of ways to do it, and a lot of them are right.

50_mph - 30_mph = 20_mph

30_mph * 1_hour = 30_miles

30_miles / 20_mph = 1.5_hours

Units are in subscript. Math teachers hate me because I have a habit of leaving the units out during calculations, leading to an answer looking like this:

50 - 30 = 20
30 * 1 = 30
30 / 20 = 1.5 hours

EDIT:

If a train leaves a station in a forest, and there's nobody around, does it derail and crash into a heavily populated suburb because it's possessed by poltergeists?
Who would have set it moving if there's nobody around?

Port · March 28, 2014, 11:40:25 AM

Quote from: Xalos on March 28, 2014, 10:45:40 AM

If a train leaves a station in a forest, and there's nobody around, does it derail and crash into a heavily populated suburb because it's possessed by poltergeists?

Yes.

Quote from: Xalos on March 28, 2014, 10:45:40 AM

Who would have set it moving if there's nobody around?

The poltergeists.

ChappersTeddy · March 28, 2014, 11:42:26 AM

Quote from: Xalos on March 28, 2014, 10:45:40 AM

EDIT:
If a train leaves a station in a forest, and there's nobody around, does it derail and crash into a heavily populated suburb because it's possessed by poltergeists?

peeves did it!

TheKid · March 28, 2014, 01:01:34 PM

Quote from: ChappersTeddy on March 28, 2014, 11:42:26 AM

peeves did it!

FOR forget'S SAKE PEEVES

Sentry · March 28, 2014, 01:03:35 PM

Dglider, Why are you making us do your homework?

Pie Crust · March 28, 2014, 01:43:02 PM

They should smash into each other but according to my physics teacher's logic, they are uncollideable and continue route even if the rails are discontinued.

snot2 · March 28, 2014, 01:48:17 PM

the answer is benedict cumberbatch

ChappersTeddy · March 28, 2014, 01:57:38 PM

Quote from: snot2 on March 28, 2014, 01:48:17 PM

the answer is benedict cumberbatch

Nonnel · March 28, 2014, 03:08:23 PM

Quote from: Xalos on March 28, 2014, 10:45:40 AM

If a train leaves a station in a forest, and there's nobody around, does it derail and crash into a heavily populated suburb because it's possessed by poltergeists?
Who would have set it moving if there's nobody around?

Was there an indian burial ground under the suburb?

$trinick · March 28, 2014, 03:12:26 PM

Algebra 1 yo