Question

In your Grandpa Will's recipe for a marinade, each serving uses 3.5 tablespoons of ketchup and 7 tablespoons of vinegar. If 31.5 tablespoons of ketchup will be used for a larger batch of marinade, how much vinegar is needed? tablespoons of vinegar are needed. Submit answer

Answer 1

The rate of ketchup to vinegar should be preserved. Let V be the volume of vinegar that will be used for the larger batch of marinade. Since the recipe uses 7 tablespoons of vinegar for each 3.5 tablespoons of ketchup, then:

`(V)/(31.5)=(7)/(3.5)`

Then, the volume of vinegar for the larger batch of marinade can be calculated as:

`\begin{gathered} V=(7)/(3.5)*31.5 \\ =63 \end{gathered}`

Therefore, 63 tablespoons of vinegar are needed.