Answer:
18 members voted in favor of the new tax.
Explanation:
Given:
Number of members = 20
Percent of members voted in favor of tax = 90 %.
Therefore, as per question,
Number of members voted in favor of tax =
![90\% \textrm{ of }20=(90)/(100)* 20=0.90* 20 = 18](https://img.qammunity.org/2020/formulas/mathematics/middle-school/jpyrlabqw8nvv04pkap6ppqwof9dj37xlm.png)
Hence, 18 members voted in favor of the new tax.