State whether the following rational number has a terminating decimal expansion or not. If it has a terminating decimal expansion,find it: $\frac{35}{50}$

(0.7) rational number $\frac{p}{q}$ has a terminating decimal expansion if the prime factorization of the denominator $q$ is of the form $2^n \times 5^m$,where $n$ and $m$ are non-negative integers.
Here,the denominator is $50 = 2^1 \times 5^2$.
Since the prime factorization is in the form $2^n \times 5^m$,the rational number $\frac{35}{50}$ has a terminating decimal expansion.
To find the decimal expansion: $\frac{35}{50} = \frac{35 \times 2}{50 \times 2} = \frac{70}{100} = 0.7$.