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Mathematics, 11.11.2020 14:00 44chandracloutier
During one month, a homeowner used 600 units of electricity and 100 units of gas for a total cost of 390. The next month, 400 units of electricity and 250 units of gas were used for a total cost of $326. Find the cost per unit of gas.
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During one month, a homeowner used 600 units of electricity and 100 units of gas for a total cost of...
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