Question

How many quarts are in a gallon?

Answer 1

Hint: The word "quart" comes from the Latin word "quartus" meaning "one-quarter" or "fourths". Gallon is a unit of volume (capacity) used in many English countries and it equals around 4.5 liters in the UK and about 3.8 liters in the US. There are 2 pints in every quart and 8 pints in a gallon.

Complete step-by-step answer:
As the name itself suggests, a quart is one-fourth of a gallon. So, there are 4 quarts in a gallon. The idea is similar to the 4 "quarters" in a dollar. Since gallons of various sizes have historically been in use, the corresponding quarts have also existed with various sizes.
In contrast, a liter (a metric unit) is subdivided into milli-liters, which are a thousandth part $\left( \dfrac{1}{1000} \right)$ or $\left( {{10}^{-3}} \right)$ of a liter. One quart is roughly equal to one liter.

Note: Until 1976 an imperial (UK) gallon was based on the volume of 10 pounds (4.5359 kg) of water at 62 ${}^\circ F$ (17 ${}^\circ C$ ).
There are two types of US gallon: liquid and dry.
Both the US liquid and imperial gallon are divided into four quarts (quarter gallons), which in turn are divided into two pints, which in turn are divided into two cups, which in turn are further divided into two gills. Thus, both gallons are equal to four quarts, eight pints, sixteen cups, or thirty-two gills.
The French revolution (1789 - 99) provided an opportunity for the French to reform their unwieldy and archaic system of many local weights and measures.