Renu saves 20% of her income. If her expenditure increase by 20% and income increase by 29%, then her saving increase by:

A. 55%

B. 65%

C. 54%

D. 60%

Answer: Option A

Solution(By Examveda Team)

\[\begin{array}{*{20}{c}} {{\text{Income}}}&{{\text{Expenditure}}}& = &{{\text{Saving}}} \\ \begin{gathered} 100 \hfill \\ \,\, \downarrow \hfill \\ 129 \hfill \\ \end{gathered} &\begin{gathered} 80 \hfill \\ \, \downarrow \hfill \\ 96 \hfill \\ \end{gathered} &{}&{\left. \begin{gathered} 20 \hfill \\ \, \downarrow \hfill \\ 33 \hfill \\ \end{gathered} \right)11} \end{array}\]
$$\frac{{11}}{{20}} \times 100 = 55\% $$