Question

energy output = 25 units
energy input = 100 units
energy efficiency = 0.25
now, if you want to calculate energy efficiency percentage, what value should be substituted into the green box?
? × 100 = energy efficiency %
energy efficiency × 100 = energy efficiency %
hint: enter a number.

Explanation:

Step1: Recall the formula for energy efficiency percentage

The formula given is \( \text{[?]} \times 100=\text{Energy Efficiency}\% \), and we know that \( \text{Energy Efficiency} \times 100=\text{Energy Efficiency}\% \). So we need to substitute the value of Energy Efficiency into the green box.

Step2: Identify the value of Energy Efficiency

From the problem, Energy Efficiency is given as \( 0.25 \). So we substitute \( 0.25 \) into the green box.

Answer:

\( 0.25 \)