Explanation:

- Distribution of Voters: In the given constituency, 60% are male voters, and the remaining 40% are females.

- Male Literacy Rate: Among males, 40% are illiterates. This means 60% of males are literate.

- Female Literacy Rate: 25% of female voters are literate, implying 75% are illiterate.

- Objective: Calculate the percentage difference between literate males and illiterate females.

- Calculation Steps:

- Assume the total number of voters is 100.

- Literate males: 60 (total males) x 60% (literate) = 36.

- Illiterate females: 40 (total females) x 75% (illiterate) = 30.

- Difference in the number of literate males and illiterate females = 36 - 30 = 6.

- Percentage by which literate males are more than illiterate females = (6 / 30) x 100% = 20%.

- Conclusion: The answer is Option: 1 - 20%.

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