[tex] \bf \stackrel{total}{220}-\stackrel{\textit{to his brother}}{\left( 220\cdot \cfrac{1}{4} \right)}-\stackrel{\textit{20\% to shop}}{\left( 220\cdot \cfrac{20}{100} \right)}-\stackrel{\textit{to school}}{15}
\\\\[-0.35em]
~\dotfill\\\\
220-55-44-15\implies \boxed{106} [/tex]
