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In the presidential election, 55% of the people who voted [#permalink]

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16 Apr 2012, 21:45

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C

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E

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67% (02:22) correct
33% (01:59) wrong based on 33 sessions

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In the presidential election, 55% of the people who voted, voted for the democratic candidate and 35% voted for the republican candidate. If 8% of the number of people eligible to vote, voted for neither the republican nor the democrat, what percent of people eligible to vote actually voted in the elections?

In the presidential election, 55% of the people who voted, voted for the democratic candidate and 35% voted for the republican candidate. If 8% of the number of people eligible to vote, voted for neither the republican nor the democrat, what percent of people eligible to vote actually voted in the elections?

A.40 B.60 C.80 D.88 E.90

let people eligible to vote = y people actually voted = x

Democratic = 0.55x Republican = 0.35 x

total voters = 0.90 x hence 0.10x voters who voted didnt voted for D and R.

now, 0.10 x = 0.08 y => x/y = 8/10

hence 80%

Hence C _________________

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In the presidential election, 55% of the people who voted, voted for the democratic candidate and 35% voted for the republican candidate. If 8% of the number of people eligible to vote, voted for neither the republican nor the democrat, what percent of people eligible to vote actually voted in the elections?

A.40 B.60 C.80 D.88 E.90

Hi,

I think this is the way how to solve this problem

Democractic : 55 Republican : 35 Total Eligible Population : x Neither : 0.08x (Its an election so you cant have both )

=> 55+35+0.08x = x 90 = 0.92 X X = 100

Thus the percent of people eligible to vote actually voted in the elections = (55+35)/100 =>90/100 = 90%

Thus E

That's not correct.

If you are doing that way then you should have 55%+35%+0.08x% = 100%, because 55%, 35% and neither=0.08x% together must sum up to 100% (all that voted). 55+35+0.08x = 100 --> x=125 --> voted/eligible=100/125=0.8.

In the presidential election, 55% of the people who voted, voted for the democratic candidate and 35% voted for the republican candidate. If 8% of the number of people eligible to vote, voted for neither the republican nor the democrat, what percent of people eligible to vote actually voted in the elections?

A.40 B.60 C.80 D.88 E.90

Hi,

I think this is the way how to solve this problem

Democractic : 55 Republican : 35 Total Eligible Population : x Neither : 0.08x (Its an election so you cant have both )

=> 55+35+0.08x = x 90 = 0.92 X X = 100

Thus the percent of people eligible to vote actually voted in the elections = (55+35)/100 =>90/100 = 90%

Thus E

That's not correct.

If you are doing that way then you should have 55%+35%+0.08x% = 100%, because 55%, 35% and neither=0.08x% together must sum up to 100% (all that voted). 55+35+0.08x = 100 --> x=125 --> voted/eligible=100/125=0.8.

Answer: C.

Hi Bunuel.. Why are we adding neither part into the equation above ?

lets say 100 people voted.. so 55 + 35 = 90 voted say x people are eligible to vote : .08x didn't vote for any of them , >> so why are we adding it to ones who voted ???

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