Correct. The equation $\displaystyle\frac{{1}}{{5}}+\frac{{1}}{{6}}+\frac{{1}}{{h}}=\frac{{1}}{{{4.5}}}\usepackage{cmbright}\Huge\$ represents the rate at which Alex $\displaystyle{\left(\frac{{1}}{{5}}\right)}\usepackage{cmbright}\Huge\$ , Ben $\displaystyle{\left(\frac{{1}}{{6}}\right)}\usepackage{cmbright}\Huge\$ , and Chet $\displaystyle{\left(\frac{{1}}{{h}}\right)}\usepackage{cmbright}\Huge\$ painted individually, as well as the rate at which the room was painted by all of them $\displaystyle{\left(\frac{{1}}{{4.5}}\right)}\usepackage{cmbright}\Huge\$ .