# Question #e920f

Apr 5, 2017

See below

#### Explanation:

$.10 t = \ln \left(\frac{7}{5}\right)$

$0.10 = \frac{1}{10}$

$\frac{1}{10} t = \ln \left(\frac{7}{5}\right)$

In order to solve for $t$, we multiply both sides by $10$

$\frac{10}{10} t = 10 \ln \left(\frac{7}{5}\right)$

$\frac{10}{10} = 1$

$t = 10 \ln \left(\frac{7}{5}\right)$