Question 134347
A sofa and a chair cost $850 as a set. The sofa cost $100 more than twice as much as the chai. Write 2 linear equations and what is the cost of the sofa and the cost of the chair.
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EQUATIONS:
s + c = 850
s = 2c + 100
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Rearrange:
s = -c + 850
s = 2x+100
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Solve for "c".
-c+850 = 2c+100
3c = 750
c = $250 (cost of a chair)
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s = 250 = 850
s = $600 (cost of a sofa)
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Cheers,
Stan H.