How many quarts are in \[10\] gallons ?

Hint:
In this type of question we first calculate the number of quarts in the unit \[1\] gallon and then we multiply this with the quantity of gallon that we want to convert into quarts. As in this question it is we have to convert \[10\] gallons.

Complete step by step solution:
Since we know that \[1{ gallon = 4 quarts}\]
Now to convert the gallons to quarts
Let the number of gallons that we want to convert be \[x\]
Then,
\[quarts{ = }x \times {\text{quarts in 1 gallon}}\]
According to question,
\[x=10\] and the quarts in unit gallon is \[4\]
\[\Rightarrow Quarts=10\times 4\]
\[\Rightarrow 40\]
Thus we have converted the given gallons into quarts.

Hence, \[10{ gallons = 40 quarts}\]

Note:
In the questions of unit conversion always follow the unitary method that first calculates the unit conversion for unit value as we have known the relation between these units then multiplies it with the given value that we want to convert.