Mathematics, 19.02.2020 04:59 yqui8767
During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $333. The next month, 400 units of electricity and 150 units of gas were used for a total cost of $286. Find the cost per unit of gas.
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During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of...
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