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Question : In an election between two candidates, 30% of the electorate did not cast their votes. 20% of the votes polled were found invalid. The winning candidate got 64% of the valid votes and won by a majority of 3136 votes. Find the number of voters enrolled in the voter list.

Option 1: 20000

Option 2: 25000

Option 3: 24000

Option 4: 30000


Team Careers360 4th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: 20000


Solution : Given:
30% of voters did not cast their votes
20% are declared as invalid
Winner gets = 64% of valid votes
Calculation:
Let the total number of voters in the voting list be 100%
According to the question,
30% of voters did not cast their votes = 100 of 30% = 30
Remaining votes = (100 - 30)% = 70%
20% are declared as invalid = 20% of 70% = 14%
Valid votes = 70% - 14% = 56%
Winner candidate gets 64% of valid votes = 64% of 56%
The loser candidate gets 36% of valid votes = 36% of 56%
According to the question,
56% of 64% - 56% of 36% = 3136
⇒ 56% × $(\frac{28}{100})$ = 3136
⇒ 1% = $\frac{(3136 × 100)}{(28 × 56)}$
⇒ 1% = 200
⇒ 100% = 20,000
Hence, the correct answer is 20,000.

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