we get the following equation
[tex]m=m_0(1+\frac{0.02}{12})^{12\cdot t}[/tex]where t is the amount of years. And m0 is the initial value. So we get
[tex]\begin{gathered} 300=m_0(\frac{601}{600})^{24}=1.040776\cdot m_0\rightarrow \\ m_0=\frac{300}{1.040776}=288.24 \end{gathered}[/tex]so Terrance did $288.24 doing odd jobs