What Is the Percent Efficiency (E)of an Engine If the Input

question 9

Multiple Choice

What is the percent efficiency (E) of an engine if the input (I) is 20,000 calories and the output (P) is 6,200 calories? Use the formula: $$E = \frac { I - P } { I }$$

• A)1.45
• B)0.69
• C)2.23
• D)0.45

---

Definitions:

Inflation

The rate at which the general level of prices for goods and services is rising, eroding purchasing power over time.

Recession

A significant decline in economic activity spread across the economy, lasting more than a few months, typically visible in real GDP, real income, employment, industrial production, and wholesale-retail sales.

Future Profits

Expected financial gains or earnings projected for future periods, considering current business operations and market conditions.