To find the ratio of the number of votes in favor of the law to the number of votes against the law, we can express it as follows:
The number of votes in favor: 16
The number of votes against: 34
The ratio can be written as:
\[ \text{Ratio} = \frac{\text{Votes in favor}}{\text{Votes against}} = \frac{16}{34} \]
To simplify the ratio, we can divide both numbers by their greatest common divisor (GCD). The GCD of 16 and 34 is 2.
Now, we simplify:
\[ \frac{16 \div 2}{34 \div 2} = \frac{8}{17} \]
So, the simplified ratio of the number of votes in favor of the law to the number of votes against the law is 8:17. However, since 8:17 is not one of the provided options, if instead we are to just express it in terms of the original numbers, the ratio is 16:34.
Among the options given: 50:34, 34:32, 34:50, 16:34, the correct answer is:
16:34.