arrow
arrow
arrow
In an election between two candidates 90 % of the registered voters cast their vote and 15 % of the votes polled were found invalid. Winning candidate
Question

In an election between two candidates 90 % of the registered voters cast their vote and 15 % of the votes polled were found invalid. Winning candidate got 51% of the valid votes and won the election by a margin of 2142 votes. How many voters were registered?

A.

140000

B.

140002

C.

139999

D.

140001

Correct option is A

Given:

90% of registered voters voted.

15% of votes polled were invalid.

Winning candidate got 51% of valid votes.

Margin of victory = 2142 votes.

Find total registered voters 

Formula Used:

Valid votes = (Total votes polled) × (1 − invalid %)

Solution: 

Let total registered voters  = N

Votes polled = 0.90N

Valid votes = 0.90N × 0.85 = 0.765N

Margin = (51% − 49%) of valid votes = 2% of valid votes

0.02 × 0.765N = 2142

0.0153N = 2142

N = 21420.0153 \frac{2142}{0.0153}​ = 140000

Free Tests

Free
Must Attempt

CBT-1 Full Mock Test 1

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

RRB NTPC Graduate Level PYP (Held on 5 Jun 2025 S1)

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

CBT-1 General Awareness Section Test 1

languageIcon English
  • pdpQsnIcon40 Questions
  • pdpsheetsIcon30 Marks
  • timerIcon25 Mins
languageIcon English

Similar Questions

test-prime-package

Access ‘RPF Constable’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow