Answer :
Amount in march = $300
By August, his savings has increased by 20%,
The value of this increase is
[tex]\begin{gathered} \text{ 20\% of \$300} \\ =\frac{20}{100}\text{ x 300} \\ =\text{ \$60} \end{gathered}[/tex]The total amount by August is $300 + $60
= $360
The answer is $360