# WRONG Mr K: that should be R + r and R - r ; see Mr S's :))

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Posted by Denis Borris on October 27, 2002 at 02:56:53:

In Reply to: Re: Brain Freeze posted by Subhotosh Khan on October 26, 2002 at 23:09:42:

: : I am struggling with Algebra and my brain just can't handle word problems. Help is appreciated.

: : With the wind, a quarterback passes a football 140 feet in 2 seconds. Against the wind, the same pass would have traveled 80 feet in 2 seconds. Find the rate of the pass and the rate of the wind.

: : I'm thinking... (since d=r.t)

: : 140=R.2
: : 80=R.2

: : If so, why can't I come up with a logical answer?
: *******************************************
: 1) What do you want to find (unknowns)? 2 unknowns:

: the rate of the pass = P......and
: the rate of the wind = W

: 2) What are given: distance and time (Your choice of equation is correct)

: 3) With the wind: Rate= P + W

: 140 = (P +W)*2

: 4) Against the wind: Rate = P - W

: 80 = (P-W)*2

: 5) In (3) and (4) you have two equations and two unknowns - solve it....

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