A process generates 250 watts of useful energy, and it has an input of 850 watts, which includes 600 watts of waste energy along with the 250 watts of useful energy. What is the efficiency of the process?(1 point) Responses 29% 29% 42% 42% 2.4% 2.4% 71%

Answer 1

Efficiency can be calculated using the formula:

\[ \text{Efficiency} = \left( \frac{\text{Useful Energy Output}}{\text{Total Energy Input}} \right) \times 100% \]

Given that the useful energy output is 250 watts and the total energy input is 850 watts, we can plug in these values:

\[ \text{Efficiency} = \left( \frac{250 \text{ watts}}{850 \text{ watts}} \right) \times 100% \]

\[ \text{Efficiency} = \left( 0.2941 \right) \times 100% \approx 29.41% \]

Rounding to the nearest whole number, the efficiency is approximately:

\[ \text{Efficiency} \approx 29% \]

So the correct response is 29%.