Question 467431
One day she sold 3 TV's and 4 Stereos for $2530. The next day, she sold 4 TVs and 3 stereos $2510. Assuming they are all the same TV's and stereos hat is the price of each TV ans stereo?
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Equations:
3t + 4s = 2530
4t + 3s = 2510
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Multiply thru 1st by 4
Multiply thru 2nd by 3
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12t + 16s = 4*2530
12t +  9s = 3*2510
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Subtract and solve for "s":
7s = 2590
s = $370.00 (price of each stereo)
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Solve for "t":
3t + 4s = 2530
3t + 4*370.00 = 2530
3t = $1050.00
t = $350.00(price of each TV)
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Cheers,
Stan H.
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