Correct. Each gallon has 16 cups, so $\displaystyle{2}\cdot{16}={32}\usepackage{cmbright}\Huge\$ will give you the number of cups in 2 gallons. Each quart has 4 cups, so there are $\displaystyle{4}\cdot{4}={16}\usepackage{cmbright}\Huge\$ cups in 4 quarts. Finally, 1 pint has 2 cups, so the total number of cups is $\displaystyle{32}+{16}+{2}={50}\usepackage{cmbright}\Huge\$ .