Question

Deon used 20 quarts of gasoline on a road trip. He wants to know how much gasoline was used in gallons.
(a)Create a double number line that shows 20 quarts in gallons. Use the fact that 4 quarts equals 1 gallon.

Answer 1

To convert quarts to gallons knowing that 4 quarts is equal to 1 gallon, we can create a double number line representing both measurements.

### Double Number Line

```
Quarts: 0 4 8 12 16 20
|-------|-------|-------|-------|
Gallons: 0 1 2 3 4
```

### Explanation
- Each interval represents 4 quarts.
- At 0 quarts, there are 0 gallons.
- At 4 quarts, there is 1 gallon.
- At 8 quarts, there are 2 gallons.
- At 12 quarts, there are 3 gallons.
- At 16 quarts, there are 4 gallons.
- Finally, at 20 quarts, there are 5 gallons.

### Conclusion
When Deon used 20 quarts of gasoline on his road trip, this is equivalent to **5 gallons** (20 quarts ÷ 4 quarts per gallon = 5 gallons).