To convert 50 liters to gallons, we can use the conversion factor that 1 gallon is approximately 3.79 liters.
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First, we can set up the conversion formula: \[ \text{gallons} = \frac{\text{liters}}{\text{liters per gallon}} = \frac{50 \text{ liters}}{3.79 \text{ liters/gallon}} \]
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Now, we calculate: \[ \text{gallons} = \frac{50}{3.79} \approx 13.2 \]
So, there are approximately 13.2 gallons in 50 liters when rounded to the nearest tenth.
The correct answer is 13.2 gallons.