use the given conversion factor to convert 21 cups to l. 1 l = 4.2 cups 21 cups = ? l

Answer:

5

Explanation:

Step1: Set up the conversion equation

Let $x$ be the volume in liters. We know that $\frac{1\ L}{4.2\ cups}=\frac{x}{21\ cups}$.

Step2: Cross - multiply and solve for $x$

$4.2x = 21\times1$. Then $x=\frac{21}{4.2}=5$.