### Use Your Knowledge of English:

**1. Analyze the Units of the Answer. How many dimensions?**

Insurance statistics state that a person loses 8 minutes of average life for each cigarette smoked. If there are 20 cigarettes in a pack and the average cost of cigarette is $5.00 per pack over the next 25 years, **how many** **years of average life** would a person lose for smoking 1.5 packs a day for **25 years**?

**are**

*Years*_{Average Life}**Time units**: a

**single (simple)**dimension with a label Average Life!

**2. Is there a single dimension 'number and unit' not connected to a Unit Factor in the problem?**