Discussion

Explanation:

Let the minimum votes required to qualify = Q and Total votes = T

Candidate A secured 30% of the total votes and did NOT qualify by 6 votes. 
∴ 0.3T = Q - 6   ...(1)

Candidate B secured 40% of the total votes and got 6 votes more than the bare minimum to qualify
∴ 0.4T = Q + 6   ...(2)

(2) - (1), we get
0.1T = 12
⇒ T = 120

Alternately,
The difference between number of votes recieved by A and B is 12 which is 10% (40% - 30%) of total votes

∴ 10% of Total votes = 12

⇒ Total votes = 120

Hence, option (d).

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