we know that
a) \(1\) gallon is equal to \(4\) quarter of gallon
so
by proportion
\(16.5\) gallons is equal to
\(\frac{1}{4} =\frac{16.5}{x} \\ x=16.5*4\\ x=66\)quarter of gallon
b) \(1\) liter is equal to \(1.06\) quarter of gallon
by proportion
\(66\)quarter of gallon is equal to
\(\frac{1}{1.06} =\frac{x}{66} \\ x=\frac{66}{1.06} \\ x=62.26\\ x=62.3\)liters
therefore
the answer is the option
\(62.3L\)
