Chapter 2 - Equations, Inequalities, and Problem Solving - 2.4 Applications with Percent - 2.4 Exercise Set - Page 110: 77

Tia needs to make $\$ 19.20$ per hour.

For a comparable income, Tia needs to make $\$ 16+20\%\cdot\$ 16$. $ 20\%\cdot 16\qquad$....$ 20\%$ converted to decimal notation is $0.2$ $=0.2\cdot 16$ $=3.20$ Therefore, Tia needs to make $16+3.20=\$ 19.20$ per hour.