SOLUTION: a carpenter bought 10 item. some cost 40 and the remaining 30.50. how many of each were bought if the total was 362

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Question 636914: a carpenter bought 10 item. some cost 40 and the remaining 30.50. how many of each were bought if the total was 362
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a carpenter bought 10 item. some cost 40 and the remaining 30.50. how many of each were bought if the total was 362
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quantity equation: f + t = 10
value equation:: 40f +30.5t = 362
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Modify the equations:
400f + 400t = 4000
400f + 305t = 3620
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Subtract and solve for "t":
95t = 380
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t = 4 (# of 30.5 items)
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Solve for "f":
f + t = 10
f = 4 = 10
f = 6 (# of 40 items)
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Cheers,
Stan H.