Question 168641: Please help me solve this equation:
Using a System of 3 equations.
9.) Gina sells magazines part time. On Thursday, Friday, and Saturday, she sold $66 worth. On Thursday she sold $3 more than on Friday. On Saturday She sold $6 more than on Thursday. How much did she take in each day?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! On Thursday, Friday, and Saturday, she sold $66 worth. On Thursday she sold $3 more than on Friday. On Saturday She sold $6 more than on Thursday. How much did she take in each day?
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T + F + S = 66
T = F + 3
S = T + 6
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Rearrange the equations:
T + F + S = 66
T - F + 0 = 3
T + 0 - S = -6
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Solve the system:
T = 21
F = 18
S = 27
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Cheers,
Stan H.
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