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November 3rd, 2011, 04:09 AM   #1
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Confusing algebra word problem

Liam's mother donates $4 per mile that Liam walks, plus an additional $30. Liam's father donates $6 per mile that he walks, plus an additional $20. If Liam walks 15 miles, what's total amount mother will donate?

What would an equation be for both the mother and the father (individually)?
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November 3rd, 2011, 05:31 AM   #2
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Re: Confusing algebra word problem

What grade are you in, Matt?
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November 3rd, 2011, 05:50 AM   #3
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There's no point in mentioning or considering the father at all, since the question asks how much the mother will donate, which is $30 plus 15 times $4, i.e., $90 in total.
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November 3rd, 2011, 08:53 AM   #4
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Re: Confusing algebra word problem

Quote:
Originally Posted by matt93
What would an equation be for both the mother and the father (individually)?
Let m be the miles that Liam walks, let a be the amount of the mother's donation, in dollars, and let b be the amount of the father's donation, in dollars.

Mother: a = 4m + 30

Father: b = 6m + 20.
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