SOLUTION: this problem is about inverse diviation, joint and combined According to Fidelity Investments, the average weekly allowence A of children varies directly as their grade level ,G

Question 44016: this problem is about inverse diviation, joint and combined
According to Fidelity Investments, the average weekly allowence A of children varies directly as their grade level ,G. In a recent year allowence of a 9th grade student was $9.96 per week. What was the average weekly allowence of a 4th grade student?
need help setting this up
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
First, write the equation of variation:
Where A is the weekly allowance, G is the student's grade level, and k is the constant of variation.
You will need to find the value of k. You can do this by substituting the given values of A and G into the above equation and solving for k.
Divide both sides by 9.

Now the equation of variation for your probem is:

To find the average allowance of a 4th grade student, just substitute 4 for G in the preceeding equation and solve for A.

or $4.43
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