the depth was 64 feet. Currently, the depth is 80 feet. by what percent has the depth increased?

The depth was 64 feet. Currently, the depth is 80 feet. The depth increased by 25%Solution:Given, The depth was 64 feet.  Currently, the depth is 80 feet.  We have to find by what percent has the depth increasedThe percentage increase is given as:[tex]\text { percent increase }=\frac{\text { change in the depth }}{\text { original depth }} \times 100 \%[/tex]Here original depth = 64Final depth = 80Change in depth = final depth - original depth = 80 - 64 = 16Plugging in values in formula we get,[tex]\begin{array}{l}{\text { Percent increase in depth }=\frac{80-64}{64} \times 100 \%} \\\\ {=\frac{16}{64} \times 100 \%} \\\\ {=\frac{1}{4} \times 100 \%=25 \%} \\\\ {\text { Hence, the depth increased by } 25 \% .}\end{array}[/tex]