What would be the resulting horsepower of an engine at 80 percent power, if it produces 120 horsepower at full capacity?

To determine the horsepower of an engine operating at 80 percent power, you start with the full capacity of the engine, which is 120 horsepower. To find 80 percent of that value, you multiply 120 horsepower by 0.80 (the decimal equivalent of 80 percent).

The calculation is:

120 horsepower x 0.80 = 96 horsepower.

Therefore, when the engine operates at 80 percent power, it produces 96 horsepower. This calculation illustrates how power settings are often given as a percentage of maximum capability, and this exercise demonstrates the straightforward application of percentages to evaluate engine performance.