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The cost to charter a certain airplane is x dollars. If the 25 members

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The cost to charter a certain airplane is x dollars. If the 25 members  [#permalink]

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New post Updated on: 03 Jan 2019, 08:04
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Question Stats:

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Project DS Butler: Day 59: Data Sufficiency (DS118)


For DS butler Questions Click Here


Tough and Tricky questions: Word Problems.



The cost to charter a certain airplane is x dollars. If the 25 members of a club chartered the plane and shared the cost equally, what was the cost per member?

(1) If there had been 5 more members and all 30 had shared the cost equally, the cost per member would have been $40 less.
(2) The cost per member was 10 percent less than the cost per person on a regularly scheduled flight.

Kudos for a correct solution.

Originally posted by Bunuel on 11 Dec 2014, 07:01.
Last edited by gmatbusters on 03 Jan 2019, 08:04, edited 1 time in total.
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Re: The cost to charter a certain airplane is x dollars. If the 25 members  [#permalink]

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New post 11 Dec 2014, 12:33
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Bunuel wrote:

Tough and Tricky questions: Word Problems.



The cost to charter a certain airplane is x dollars. If the 25 members of a club chartered the plane and shared the cost equally, what was the cost per member?

(1) If there had been 5 more members and all 30 had shared the cost equally, the cost per member would have been $40 less.
(2) The cost per member was 10 percent less than the cost per person on a regularly scheduled flight.

Kudos for a correct solution.


here we have to calculate the value of x

st.1
\(\frac{x}{25} - \frac{x}{30}\) \(=40\)
\(x\frac{(6-5)}{150}=40\)

\(x=6000\)

hence sufficient

st.2 since we don't know the cost of regular scheduled flight. hence st.2 alone is insufficient to answer the question.

hence A
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Re: The cost to charter a certain airplane is x dollars. If the 25 members  [#permalink]

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New post 12 Dec 2014, 05:22
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Statement 1 means that(x/30)=((x/25)-40). Hence we can find x
Statement 2 gives no additional information to find cost per person on regular flight. Hence answer A
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Re: The cost to charter a certain airplane is x dollars. If the 25 members  [#permalink]

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New post 03 Jan 2019, 11:50
gmatbusters wrote:

Project DS Butler: Day 58: Data Sufficiency (DS116)


For DS butler Questions Click Here


Bumping for DS Butler Project


Is it just me or is answer choice B so irrelevant that it reminds one of a CR answer choice rather than of a DS statement? :lol:
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Re: The cost to charter a certain airplane is x dollars. If the 25 members  [#permalink]

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New post 12 Aug 2019, 05:01
question: x/25=Cpm Cpm=?

Statement1: x/(25+5)=Cpm-40. We can find Cpm by substitution -->sufficient
Statement2: We don't know the cost per person of regular flight --> insufficient
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Re: The cost to charter a certain airplane is x dollars. If the 25 members   [#permalink] 12 Aug 2019, 05:01
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