Question 607392
An electronics company produces three models of stereo speakers, models A, B, and C, and can deliver them by truck, van or station wagon. 
A truck holds 2 boxes of model A, 1 of model B, and 3 of model C. 
A van holds 1 box of model A, 3 boxes of model B, and 2 boxes of model C. 
Astation wagon holds 1 box of model A,3 boxes of model B, and 1 box of model C.
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If 15 boxes of model A, 20 boxes of model B and 22 boxes of model C are to be delivered, how many vehicles of each type should be used so that all operate at full capacity? 
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A's: 2t + 1v + 1s = 15
B's: 1t + 3v + 3s = 20
C's: 3t + 2v + 1s = 22
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Using a matrix method you get:
# of trucks = 5
# of vans = 2 
# of station wagons = 3
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Cheers,
Stan H.
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