Question

an aquarium tank holds 190 liters of water. how much is this in gallons? use the following conversion: 1 gallon is 3.8 liters.

Explanation:

Step1: Set up conversion formula

Let $x$ be the number of gallons. We know that the ratio of gallons to liters is $\frac{1}{3.8}=\frac{x}{190}$.

Step2: Cross - multiply and solve for $x$

Cross - multiplying gives $3.8x = 190$. Then $x=\frac{190}{3.8}$.
$x = 50$.

Answer:

50