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Algebra: Phone charges

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A phone company charges a different rate for a local call than a long distance call. A local call costs $0.15 per minute and a long distance call costs $0.45 per minute. Last month a customer made 320 minutes of calls. If the total cost of the calls was $99.00, how many minutes of each type of call did the customer make?

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The solution provides step by step method for the calculation of the algebra problem. Formula for the calculation is also included.

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Let there be x minutes of local calls. Then the long ...

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