can anybody answer???
02-10-2004, 12:50 PM
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can anybody answer???
a queston on the back of a matchbox??
an old steam train travels from Aton to Bton at 50mph, but from Bton to Aton at 75mph, as the journey involves a steep gradient. It takes the engine two hours longer to do the uphil journey than it does to return on the downhill stretch.
How far apart are Aton and Bton?
if you want the answer you have to SAE it
i can't be bothered - but would like to know. it would settle a little argument 
Cheers
Daniel
an old steam train travels from Aton to Bton at 50mph, but from Bton to Aton at 75mph, as the journey involves a steep gradient. It takes the engine two hours longer to do the uphil journey than it does to return on the downhill stretch.
How far apart are Aton and Bton?
if you want the answer you have to SAE it
i can't be bothered - but would like to know. it would settle a little argument Cheers
Daniel
02-10-2004, 04:09 PM
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Originally Posted by RSrussell
75mph = 0
50mph = +2hours
25mph= + 4hours
0mph = +6hours
so 6hours @ 50mph
and 4hours @ 75mph
so 300miles
simple maths you spazzos
50mph = +2hours
25mph= + 4hours
0mph = +6hours
so 6hours @ 50mph
and 4hours @ 75mph
so 300miles
simple maths you spazzos
02-10-2004, 06:37 PM
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I got 300 too.
Distance=speed x time
we have 2 different equations for the same distance, so can put them equal to each other
50 x (t + 2hrs for slower journey) = 75 x t
50t + 100 = 75t
100 = 25t
So time for journey at 75mph is 4 hrs
75mph x 4hrs = 300 miles.
Distance=speed x time
we have 2 different equations for the same distance, so can put them equal to each other
50 x (t + 2hrs for slower journey) = 75 x t
50t + 100 = 75t
100 = 25t
So time for journey at 75mph is 4 hrs
75mph x 4hrs = 300 miles.
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