miles

[neilccfc]

how long does it take to do 60 miles if you do the first mile at 60 mph and reduce your speed by 1mph each mile, so when you do your last mile your doing 1 mph

[Gnu]

Because speed = distance / time, this can be rearranged to give time = distance / speed. The first mile takes 1/60 hours, the second 1/59 hours etc. until the last takes 1/1 hours.

Hope you've got a calculator handy.

[sddsddean]

So your first mile will take 1 minute, 2nd 2 minutes and so on until your 60th mile takes 60 mins. Therefore, do 1+2+3+4...+59+60 to get 1830 minutes = 30hrs 30mins.....I think!

[halfadaily]

1st mile at 60mph would take 1 min, 2nd mile at 59mph would take 1.01694 min (i.e. 60 divided by 59), 3rd mile at 58mph would take 1.03448 min.

That's as far as I got last night before I got bored with it. Anyone fancy doing the rest and filling it in?

[kempie]

280.7922248 minutes

or

4hrs 40mins 47.53secs

[halfadaily]

nicely worked out Kempie......I'll take your word for it!