Q552
The ratio of expenditure to savings of a woman is 5 : 1. If her income and expenditure are increased by 10% and 20%, respectively, then find the percentage change in her savings.
A.
55%
B.
60%
C.
50%
D.
40%
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
\begin{array}{*{20}{c}}
{{\text{Income}}}&{{\text{Expenditure}}}&{{\text{Saving}}} \\
\begin{gathered}
600 \hfill \\
\,\,\,\,\,\,\,\,\,\,{ \downarrow ^{ + 10\% }} \hfill \\
660 \hfill \\
\end{gathered} &\begin{gathered}
500 \hfill \\
\,\,\,\,\,\,\,\,\,{ \downarrow ^{ + 20\% }} \hfill \\
600 \hfill \\
\end{gathered} &\begin{gathered}
100 \hfill \\
\hfill \\
60 \hfill \\
\end{gathered}
\end{array}Decrease in saving = × 100 = 40%