1. The problem statement, all variables and given/known data
$$Let\quad n\quad =\quad the\quad number\quad of\quad hours\quad I\quad run\quad a\quad 40\quad kilowatt\quad generator.\\ Assume\quad that\quad it\quad costs\quad $0.08\quad for\quad 1\quad kWh.\\ Revenue\quad from\quad generator=\frac { $0.08 }{ kW\cdot hours } \quad (40\quad kW)\quad (n\quad hours)\\ =$3.2n\\ \\ Suppose\quad I\quad want\quad to\quad make\quad $6.40\quad from\quad the\quad generator.\\ $6.4=$3.2n\\ n=2$$
2. Relevant equations
3. The attempt at a solution
What am I doing wrong? Why isn't n in hours?
$$Let\quad n\quad =\quad the\quad number\quad of\quad hours\quad I\quad run\quad a\quad 40\quad kilowatt\quad generator.\\ Assume\quad that\quad it\quad costs\quad $0.08\quad for\quad 1\quad kWh.\\ Revenue\quad from\quad generator=\frac { $0.08 }{ kW\cdot hours } \quad (40\quad kW)\quad (n\quad hours)\\ =$3.2n\\ \\ Suppose\quad I\quad want\quad to\quad make\quad $6.40\quad from\quad the\quad generator.\\ $6.4=$3.2n\\ n=2$$
2. Relevant equations
3. The attempt at a solution
What am I doing wrong? Why isn't n in hours?
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