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#1 2020-05-14 06:04:02

Ayomide
Member
Registered: 2020-05-14
Posts: 3

Comment on 'riding against the wind puzzle'

I figured it was speed we were looking for, so this is what I did:(Let speed of wind=w, and speed of rider=x)
 
Using distance/speed=time:
1/(x+w)=3
1/(x-w)=4

x+w=1/3
x-w=1/4

2x=7/12
x=7/24 miles/min

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#2 2020-05-14 20:34:24

Bob
Administrator
Registered: 2010-06-20
Posts: 8,916

Re: Comment on 'riding against the wind puzzle'

hi Ayomide

I've would do this puzzle in a similar fashion too.  The 'solution' uses a sort of averaging effect and I'm a bit suspicious about that in general, although it does seems to work here.

The question actually asks for the time to do a mile so you are one step short of that at the moment.

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob smile

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