how do i solve this? 10 points best answer!!!?

Question

In an election in a given society,500 members were interviewed on whom they preferred for chairmanship and secretary post. it was found that 360 voted for candidate X for chairmanship and 196 did not vote for Y for secretary post. 90 were undecided in both cases

find the entire portion of the society that voted for Y

Answer 1

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50 for Y for the chairman.

214 for Y for the Secretary.

I'm not absolutely sure.

Answer 2

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Answer 3

sorry