SOLUTION: Cost of training a puppy for 10 days is $349.99. For a brief period of time, the trainer offered a discount of 23% on his usual training fee. If the training fee during this time w

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Question 779180: Cost of training a puppy for 10 days is $349.99. For a brief period of time, the trainer offered a discount of 23% on his usual training fee. If the training fee during this time was $379.98, what is the usual profit for the trainer?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +f+ = the usual fee to train puppy
+f+-+.23c+ = the discounted cost
+f+-+.23c+=+f%28+1+-+.23+%29+
+f%28+1+-+.23+%29+=+.77f+
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given:
+.77f+=+379.98+
+f+=+493.48+
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The usual profit is
+493.48+-+349.99+=+143.49+
$143.498
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The problem could have been worded better.
It should have said " the cost to the trainer
of training a puppy for 10 days is $349.99