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Whos good at maths?(19 posts)

Whos good at maths?JD88
Dec 3, 2002 3:30 PM
If I rode 15km in 27 mins what was my av speed?
20.7 mph...C-40
Dec 3, 2002 3:41 PM
15km x(.6215mi/km)x(60min/hr)/27min = 20.7mi/hr
Thanks for that, but what is it in kph?JD88
Dec 3, 2002 3:43 PM
re: Whos good at maths?Humma Hah
Dec 3, 2002 3:43 PM
15/27 * 60 kph = 33.33 kph

Doing it in mph:

15*1000*100/2.54/12/5280 = 9.32 miles

9.32/27*60 = 20.71 mph

You need to ride harder and practice your math!
Ha Ha give me a break that was done on an MTB...JD88
Dec 3, 2002 3:49 PM
Me'd said hes grammars is worse... pfff mathS (nm)PODIUMBOUNDdotCA
Dec 3, 2002 5:00 PM
Actually in Australia we do call it maths not math.JD88
Dec 3, 2002 5:12 PM
Thats because we speak English here not American, most pronuciations used here are closer to the true English language than many of the "Americanisations" that have crept into your language. But hey you have 200+ million ppl over there so I guess your entiled to your own language!
300 million plus :) (nm)PODIUMBOUNDdotCA
Dec 3, 2002 6:52 PM
Actually, about 288 millionfbg111
Dec 3, 2002 7:44 PM
http://www.census.gov/
Ws thinking north america... up ere 30 million or so igloos nmPODIUMBOUNDdotCA
Dec 3, 2002 8:02 PM
Stupid "a" and "h" freezing up again (nm)PODIUMBOUNDdotCA
Dec 3, 2002 8:15 PM
More like 288 million + 40 million illegal immigrants (nm)Bruno S
Dec 3, 2002 10:26 PM
how the hell do you pronounce "maths"?collinsc
Dec 3, 2002 8:32 PM
thats pretty difficult to say

too many things for my tongue to try and do at once.
He might have been referring to the lack of an apostrophe in "who's"jtolleson
Dec 3, 2002 9:23 PM
... rather than "math" vs. "maths." Seriously, lighten up. You asked a basic math/maths question and got a little teased. No need to make it an international issue.
simplify man...Steve_0
Dec 4, 2002 6:35 AM
15*.62 = 9.32
I believe it's 20.66mph or 33.32kmph (NM)High Gear
Dec 3, 2002 3:44 PM
Thanks everyone!JD88
Dec 3, 2002 3:48 PM
re: Whos good at maths?fbg111
Dec 3, 2002 7:54 PM
Just remember this little equation: D = RT.
Distance = Rate x Time.
Or, in your case, R = D/T.

And 8km = 5mi, so:

(/ = divide; * = multiply)

[D(mi) / T(hr)] * [8(km) / 5(mi)] = R(km/hr).
33 km/hourbenja15
Dec 3, 2002 8:50 PM
about 33 km/hour