Answer
$\dfrac{9}{25}$ or $36\%$
Work Step by Step
The probability of grabbing a novel out of the bag is $\dfrac{3}{5}$ and the events are independent because the book is replaced the next day.
Use the formula for independent events:
$P(Q$ $and$ $R)=P(Q)$ $\times$ $P(R)$.
We are given $P(Q)=\dfrac{3}{5}$ and $P(R)$ is $\dfrac{3}{5}$.
Plug the values into the formula:
$P(Q$ $and$ $R)$ = $\dfrac{3}{5}$ $\times$ $\dfrac{3}{5}$
$P(Q$ $and$ $R)$ = $\dfrac{9}{25}=36\%$