Correct. If $\displaystyle{j}=\usepackage{cmbright}\Huge\$ Julio's age, then $\displaystyle{3}{j}=\usepackage{cmbright}\Huge\$ his grandfather's age. The sum of these is 92, so $\displaystyle{j}+{3}{j}={92}\usepackage{cmbright}\Huge\$ . This simplifies to $\displaystyle{4}{j}={92}\usepackage{cmbright}\Huge\$ . Divide both sides by 4: $\displaystyle{j}={23}\usepackage{cmbright}\Huge\$ . His grandfather is 3 times as old, or 69 years old.