Re: Brain Freeze

Posted by Subhotosh Khan on October 26, 2002 at 23:09:42:

In Reply to: Brain Freeze posted by KayMarie on October 26, 2002 at 22:22:49:

: 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....

Follow Ups:

• WRONG Mr K: that should be R + r and R - r ; see Mr S's :)) Denis Borris 02:57:29 10/27/02 (0)
• WRONG Mr K: that should be R + r and R - r ; see Mr S's :)) Denis Borris 02:56:53 10/27/02 (3)
  • Help a rookie see the difference? MathBard 03:17:45 10/27/02 (2)
    • NO diff: was just pulling Mr K's leg! Denis Borris 03:50:45 10/27/02 (1)
      • what's the formula for calculating the pulling of his leg vs. pulling my finger? MathBard 03:57:43 10/27/02 (0)

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