Final answer:
The minimum number that would have to vote in the affirmative to adopt the motion is 30.
Step-by-step explanation:
In order to adopt the motion to rescind, a minimum number of votes in the affirmative would be required. The minimum number would depend on the voting rules in place. In most cases, ordinary laws require a majority vote to pass, which is defined as more than 50 percent of the votes cast.
In this scenario, there are sixty members at the meeting. To calculate the minimum number, we would need to find 50 percent of sixty.
50 percent of sixty is (0.50)(60) = 30. Therefore, the minimum number that would have to vote in the affirmative to adopt the motion is 30.