Aptitude - Percentage - Discussion

Discussion Forum : Percentage - General Questions (Q.No. 10)
10.
In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:
2700
2900
3000
3100
Answer: Option
Explanation:

Number of valid votes = 80% of 7500 = 6000.

Valid votes polled by other candidate = 45% of 6000

= 45 x 6000 = 2700.
100

Discussion:
113 comments Page 11 of 12.

Shomik Sen said:   1 decade ago
Question says 55%, then how come the answer have 45% ?

Rachi gupta said:   1 decade ago
How 80% and 45% are arrived?

Maq said:   1 decade ago
Try this method

Invalid votes = 20*7500/100=1500
Total Valid Votes = 7500-1500=6000
Candidate A got 55*6000/100=3300
Candidate B valid votes = 6000-3300=2700

Navin said:   1 decade ago
We can also do it as ..
There is only 80% votes are valid so
80% of 7500 = 6000 are total valid votes
and one candidate got 55% of total votes i.e.6000*55/100=3300( votes of one candidate )

So other candidate got votes 6000-3300=2700 votes.

Mridul Roy said:   1 decade ago
There is another method we can apply :
The total % of invalid vote is 20% i.e. 100-20 = 80
therefore, out of 100%, 80% vote are valid vote.

so, the first candidates got 55% of 80. i.e. 44.
and the second candidates got 80-44 = 36.

therefore, 36/100*7500 = 2700.

Syed said:   1 decade ago
In 55% votes only 35% of votes only valied therefore 35+45 is 80 to find total no of valid votes we do 80*7500/100

Moni said:   1 decade ago
20% are the invalid votes so we consider oly 80%.

Shiv said:   1 decade ago
How you know its 80%?

Muthalageee said:   1 decade ago
The answer rite.

First deduct the invalid 20% from the total 7500 =6000.

So the other candidate valid vote is 45/100*6000=2700 (since 55-100=45).
(1)

Aparna said:   1 decade ago
@Manu

80/100*7500 = 6000


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