1. The problem involves understanding the ratio of vinegar to oil given the quantities 60 units of vinegar and 240 units of oil. 2. The ratio of vinegar to oil is calculated by dividing the amount of vinegar by the amount of oil: $$\text{Ratio} = \frac{60}{240}$$ 3. Simplify the fraction by dividing numerator and denominator by their greatest common divisor, which is 60: $$\frac{\cancel{60}}{\cancel{240}} = \frac{1}{4}$$ 4. This means the vinegar to oil ratio is $1:4$. 5. The graph described is a vertical bar graph with the vinegar bar height at 60 units and the oil bar height at 240 units, visually representing the $1:4$ ratio. Final answer: The vinegar to oil ratio is $1:4$.