Answer
$y = \frac{65}{2} = 32.5$
Work Step by Step
We use the method of cross multiplying, which states that if $\frac{a}{b} = \frac{c}{d}$, then $ad = bc$. This result can be achieved by multiplying both sides by $cd$.
$\frac{y}{10} = \frac{13}{4} \rightarrow 4y = 130 \rightarrow y = \frac{65}{2} = 32.5$
