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Transportation expenses accounted for a large portion of the total dol

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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 19 Aug 2017, 11:16
AbdurRakib wrote:
Transportation expenses accounted for a large portion of the total dollar amount spent on trips for pleasure by residents of the United States in 1997, and about half of the total dollar amount spent on the transportation was airfare. However, the large majority of United States residents who took trips for pleasure in 1997 did not travel by airplane but used other means of transportation.

If the statements above are true, which of the following must also be true about United States residents who took trips for pleasure in 1997?

A) Most of those who traveled by airplane did so because the airfare to their destination was lower than the cost of other available means of transportation.
B) Most of those who traveled by airplane did so because other means of transportation to their destinations were unavailable.
C) Per mile traveled, those who traveled by airplane tended to spend more on transportation to their destination than did those who used other means of transportation.
D) Overall, people who did not travel by airplane had lower average transportation expenses than people who did.
E) Those who traveled by airplane spent about as much, on average, on other means of transportation as they did on airfare.


I have only one question on this one. I'm going to rewrite the portion of the stimulus that confuses me...

"Transportation expenses accounted for a large portion of the total dollar amount spent on trips for pleasure by residents of the United States in 1997"

Now please help me with this confusion..

What is this amount that we're talking about?
Is it

A. The entire total of all the resident travellers combined?
or
B. The entire total of one resident traveller's transportation expense?

Although, if it were clearly written that "transportation expenses on average for residents", then it would definitely be B. But how do we differentiate? will "on average" always be explicitly stated when it is meant to?
Experts, please help on this. IanStewart mikemcgarry
your help is really appreciated.
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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 19 Aug 2017, 14:49
ShashankDave wrote:

"Transportation expenses accounted for a large portion of the total dollar amount spent on trips for pleasure by residents of the United States in 1997"

Now please help me with this confusion..

What is this amount that we're talking about?


The question talks about "the total amount spent by residents". That has to mean the total amount, because "residents" is pluralized. If instead it meant the amount per person, there would be a few ways to convey that - it could say 'per person', or use the word 'average', or talk about the amount spent by 'each resident' (and there are surely other ways that aren't occurring to me right now).

But the distinction you're asking about doesn't matter in this question, because we're just concerned with the fraction of holiday expenses that are spent on transportation. It won't matter if you measure that by taking the sum total of all expenses, or by looking at expenses per person; you'll get the same result. If people spent $H in total on holidays, and $T in total on transportation, then T/H is the fraction of holiday expenses spent on transportation. If you have n people in total, then on average each person spent $H/n on holidays, and $T/n on transportation, so the fraction the average person spent on transportation was (T/n)/(H/n) = T/H, so is the same as what we found using the sum totals.
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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 20 Aug 2017, 01:42
What is the OA here ?

Looks like D imo
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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 20 Aug 2017, 11:36
Transportation expenses accounted for a large portion of the total dollar amount spent on trips for pleasure by residents of the United States in 1997, and about half of the total dollar amount spent on the transportation was airfare. However, the large majority of United States residents who took trips for pleasure in 1997 did not travel by airplane but used other means of transportation.

Type - inference
Boil it down - Half of the total dollar amount spent on the transportation was airfare . The large majority of United States residents who took trips for pleasure in 1997 did not travel by airplane but used other means of transportation.

A) Most of those who traveled by airplane did so because the airfare to their destination was lower than the cost of other available means of transportation. - Out of scope
B) Most of those who traveled by airplane did so because other means of transportation to their destinations were unavailable. - Out of scope - the argument gives no information about unavailability of other means of transportations
C) Per mile traveled, those who traveled by airplane tended to spend more on transportation to their destination than did those who used other means of transportation. - Incorrect- we do not have any information on cost per mile traveled
D) Overall, people who did not travel by airplane had lower average transportation expenses than people who did. - Correct - majority for people accounted for half of total dollar amount spent on transportation
E) Those who traveled by airplane spent about as much, on average, on other means of transportation as they did on airfare. - Incorrect - may be true but need not be true

Answer D
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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 05 Sep 2017, 13:56
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I chosed D over C because the prompt is only concerned with dollar amounts spend on means of transportation but does not indicate how many miles people actually traveled for the dollar amount they spend.
Let's imagine that the majority of residents who traveled by train or car and spend less money on means of transportation traveled (relatively short distances) within the US, and residents who traveled by airplane did so to go i.e. to Europe. If we spread airfare costs over the number of miles traveled from the US to Europe and compare it to the average cost per mile for a shorter trip by car / train within the US, cost per mile for airfare is probably the same or less than cost per mile for other means of transportation.
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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 01 Dec 2017, 09:55
bhamini1 wrote:
Can somebody explain why C option is wrong.What i could gather was that since per mile cost of air travel was high so the cost of airfare is high even when smaller share of people used air travel



well,i think we have not given any information regarding per mile travel.hence we can not conclude something related to per mile travel.
the option at first is very tempting.but in context of the given passage,it stands nowhere
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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 04 Jan 2018, 21:44
GMATNinja VeritasPrepKarishma GMATNinjaTwo

Hi Experts,

I am presenting my approach which took me more than 3 mins.

total amount spent on trips for pleasure by residents of the United States in 1997: 100 USD

amount spent on trips for pleasure by residents of the United States in 1997: 51 USD

total dollar amount spent on the airfare transportation: 50 USD

% United States residents who took trips for pleasure in 1997 and used other means of transportation: 51

If 51% people spent 50 USD on non airfare ie 50 USD and 49% spent on airfare say 50 USD assuming total as X% and simpliying
if 2 people spend 2 $ among them and 1 person spends 2 $ making the former ie airplane more expensive.

Can you explain specific difference between large and most?
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Re: Transportation expenses accounted for a large portion of the total dol  [#permalink]

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New post 08 Jan 2018, 23:32
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adkikani wrote:
GMATNinja VeritasPrepKarishma GMATNinjaTwo

Hi Experts,

I am presenting my approach which took me more than 3 mins.

total amount spent on trips for pleasure by residents of the United States in 1997: 100 USD

amount spent on trips for pleasure by residents of the United States in 1997: 51 USD

total dollar amount spent on the airfare transportation: 50 USD

% United States residents who took trips for pleasure in 1997 and used other means of transportation: 51

If 51% people spent 50 USD on non airfare ie 50 USD and 49% spent on airfare say 50 USD assuming total as X% and simpliying
if 2 people spend 2 $ among them and 1 person spends 2 $ making the former ie airplane more expensive.

Can you explain specific difference between large and most?

The passage states that "the large majority of United States residents who took trips for pleasure in 1997 did not travel by airplane but used other means of transportation." A 49%-51% split would not represent a "large" majority. There is no numerical cutoff for a "large" majority but if the numbers were that close, it would make more sense to call it a "slim" majority.

For example, if 499 people like Coke and 501 like Pepsi, then most people like Pepsi and the majority of people like Pepsi. But does a large majority prefer Pepsi? Not in this case because the difference is very small. If 800 people like Coke and 200 like Pepsi, then we could say that the large majority of people surveyed like Coke. Again, there really isn't any absolute rule for the numerical cutoff, but if we want to use "large majority", there should be a significant difference.

I hope that helps!
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