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-   -   I Q Test for 50+'rs (http://www.bikeforums.net/fifty-plus-50/664918-i-q-test-50-rs.html)

DnvrFox 07-22-10 04:49 PM

I Q Test for 50+'rs
 
If you have seen this before, please refrain from explaining the problem until some folks who haven't seen it before have an opportunity to post their responses. Hopefully, everyone gets it right!!

You bike 10 miles at 20 miles per hour and 10 miles at 10 miles per hour. What is your average speed?

steve0257 07-22-10 04:57 PM

Well, if you don't stop I come up with 13.3 mph. But wait, there's the DQ, and the A&W, and a donut shop, and a coffee shop, and a bakery. I'm going to be out here all day.

Pamestique 07-22-10 04:58 PM

Aaaghhhh math problems... I didn't llike them when young!

15...

badrad 07-22-10 05:04 PM

i got it! i got it!

the bike color is red.

Cleave 07-22-10 05:10 PM

Hi,

10 miles at 20 MPH = 30 minutes
10 miles at 10 MPH = 60 minutes
30 min + 60 min = 90 min = 1.5 hours
20 miles / 1.5 hours = 13.33 MPH

Unless my analysis is faulty, steve0257 wins. :)

badamsjr 07-22-10 05:13 PM

Some advertisement was over the part where you asked what is your ? If asking for average speed, I get 13.3333333333333333333333333333333333333333333333333333333333333333333333333333333mph. If you want to know how old the rider is, it is 63.:)

DnvrFox 07-22-10 05:15 PM

Quote:

Originally Posted by Cleave (Post 11159171)
Hi,

10 miles at 20 MPH = 30 minutes
10 miles at 10 MPH = 60 minutes
30 min + 60 min = 90 min = 1.5 hours
20 miles / 1.5 hours = 13.33 MPH

Unless my analysis is faulty, steve0257 wins. :)

No, wrong. The color of the bike is white.

nancyj 07-22-10 05:16 PM

Mannnnn.......... now I know why I need to buy a bike computer.

ilikepcs 07-22-10 05:20 PM

I have to go with 13.3 (as noted above)

BengeBoy 07-22-10 05:23 PM

Uphill, or down?

DnvrFox 07-22-10 05:24 PM

Quote:

Originally Posted by BengeBoy (Post 11159252)
Uphill, or down?

You must be an engineer!!

GeneO 07-22-10 05:57 PM

The answer, as always, is my average was 18 mph and I am sticking to it (please don;t revoke my PhD :D )

Retro Grouch 07-22-10 06:00 PM

You rode 20 MPH going to the cafe but could only manage 10 MPH on the way back. The difference is obviously Pi.

bjjoondo 07-22-10 06:02 PM

Have no idea, I was just to busy enjoying the "SMILES"! ;)

The Weak Link 07-22-10 06:34 PM

Whatever the answer is, I'm sure it is way faster than I went today, even doping my Garmin was no help.

BlazingPedals 07-22-10 07:10 PM

Are those metric hours, or imperial?

badamsjr 07-22-10 07:32 PM

Retro Grouch: what I have never been able th figure out--somebody said Pi r square. I have always thought Pi r round.

footboard 07-22-10 07:37 PM

I was told there would be no math when I joined this forum.

JanMM 07-22-10 07:59 PM

Quote:

Originally Posted by footboard (Post 11159872)
I was told there would be no math when I joined this forum.

"There is no match for this forum." That's what newcomers are told.

bgary 07-22-10 08:50 PM

20 mph + 10 mph = 30 mph

Where did you guys go to school?

EDIT:

I'm sorry, that is TOTAL speed. For AVERAGE speed:

30 mph / 10 miles = 3 mph

rm -rf 07-22-10 09:19 PM

Why you can't make it up on the descent:

You climb the 1 mile hill at 5 mph. Then you go back down 1 mile at 100,000 mph. What's your average speed?

Drag over the line to
highlight the answer---> 9.9995 mph = 2 miles / (.2 hrs +.00001 hrs) <--

old&slow 07-22-10 09:24 PM

...raise hand...

FULL MOON, FULL MOON, FULL MOON.....

rubic 07-22-10 09:37 PM

This is easy. With all the factors accounted for and calculated properly, my average speed is, um, average.

MinnMan 07-22-10 11:50 PM

Was I riding an African Swallow or a European Swallow?

nancyj 07-23-10 02:43 AM

Had an aha moment.

My average speed is ZERO, the bike is the one that is moving. There, that is my story and I will stick with that.


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