Let
x------> the sale price of a jacket
y-----> the original price of a jacket
we know that
\(\frac{x}{y} = \frac{3}{4}\) -------> equation \(1\)
\(y=64\) -------> equation \(2\)
Substitute equation \(2\) in equation \(1\)
\(\frac{x}{64} = \frac{3}{4}\\ \\ 4*x= 64*3\\ \\ x=\frac{64*3}{4}\)
\(x=48\ dollars\)
therefore
the answer is
the sale price of a jacket is \(48\ dollars\)
