What fraction of an hour is $35minutes$ ?

The correct option is B

$\frac{7}{12}$

We know that,

$60minutes=1hour$

Divide on both sides with $60$

$$\begin{gathered} \frac{60}{60}minutes=\frac{1}{60}hour \\ 1minute=\frac{1}{60}hour \end{gathered}$$

According to the question, multiply with $35$ on both the sides.

$$\begin{gathered} 35minutes=\frac{35}{60}hour \\ 35minutes=\frac{7}{12}hour \end{gathered}$$

Therefore, the fraction of $35minutes$ in an hour is $\frac{7}{12}$.