In a mayor's race of three candidates, Isaac received 4,000 votes, Benoit received 6,000 votes, and Rene received 1/3 of the votes. What was the total number of votes cast in the election?

To find the total number of votes cast in the election, we need to add up the number of votes each candidate received.

Isaac received 4,000 votes.
Benoit received 6,000 votes.
Rene received 1/3 of the votes.

To find the number of votes Rene received, we first need to calculate what fraction of the total votes Benoit received. Since Rene received 1/3 of the votes, he received (1/3) * (6,000 votes) = 2,000 votes.

Now we can add up the votes received by each candidate:
4,000 votes + 6,000 votes + 2,000 votes = 12,000 votes.

Therefore, the total number of votes cast in the election was 12,000 votes.