SOLUTION: A local Computer City sells batteries ($3) and small boxes of pens ($4). In August, total sales were $912. Customers bought 4 times as many batteries as boxes of pens. How many of

Algebra ->  Finance -> SOLUTION: A local Computer City sells batteries ($3) and small boxes of pens ($4). In August, total sales were $912. Customers bought 4 times as many batteries as boxes of pens. How many of       Log On


   

Question 1117384: A local Computer City sells batteries ($3) and small boxes of pens ($4). In August, total sales were $912. Customers bought 4 times as many batteries as boxes of pens. How many of each did Computer City sell?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A local Computer City sells batteries ($3) and small boxes of pens ($4). In August, total sales were $912. Customers bought 4 times as many batteries as boxes of pens. How many of each did Computer City sell?
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Quantity Eq:: b = 4p
Value Eq::::: 3b+4p = 912
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Substitute for "b" and solve for "p"::
3(4p)+4p = 912
16p = 912
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p = 57 (boxes of pens)
b = 4p = 228 (boxes of batteries)
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Cheers,
Stan H.
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