SOLUTION: Computer Warehouse sells batteries ($3) and small boxes of pens ($5). In July, total sales were $960. Customers bought 5 times as many batteries as boxes of pens. How many of

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Computer Warehouse sells batteries ($3) and small boxes of pens ($5). In July, total sales were $960. Customers bought 5 times as many batteries as boxes of pens. How many of      Log On


   

Question 179477: Computer Warehouse sells batteries ($3) and small boxes of pens ($5). In July, total sales were $960.
Customers bought 5 times as many batteries as boxes of pens. How many of each did Computer Warehouse sell?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Computer Warehouse sells batteries ($3) and small boxes of pens ($5). In July, total sales were $960.
Customers bought 5 times as many batteries as boxes of pens. How many of each did Computer Warehouse sell?
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Quantity equation: b = 5p
Value Equation: 3b + 5p = 960
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Substitute to solve for "p":
3(5p) + 5p = 960
15p + 5p = 960
20p = 960
p = 48 (# of boxes of pens sold)
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Since b = 5p, b = 5*48 = 240 (# of batteries sold)
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Cheers,
Stan H.