Question 18If $\log_8 3=p$ and $\log_3 5=q,$ then, in terms of $p$ and $q,$ $\log_{10}5$ equals$pq$$\frac{3p+q}{5}$$\frac{1+3pq}{p+q}$$\frac{3pq}{1+3pq}$$p^2+q^2$