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A. 430
B. 570
C. 480
D. 520
E. None of these

Explanation:

Let the total number of valid votes be x.

70% of x = 70/100 * x = 7x/10
Number of votes secured by the other candidate = x – 7x/100 = 3x/10
Given, 7x/10 – 3x/10 = 172 => 4x/10 = 172
=> 4x = 1720 => x = 430.

Correct Answer: 430

Last Updated: February 07, 2020