Discussion
A plant uses 4800 MWh to make 12 000 t of product. Its specific consumption is
Answer: D
Correct answer: 400 kWh/t
\[ \frac{4{,}800{,}000\ \mathrm{kWh}}{12{,}000\ \mathrm{t}} = 400\ \mathrm{kWh/t}. \] The megawatt hours must be converted to kilowatt hours first; working in the given units and forgetting the factor of a thousand gives 0.4, and misplacing it gives the 40 offered here.
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