Because of extreme congestion in the city of Nobi, it typically takes

What is error in A
Can someone explain that

Problem with (A) is-
The argument is not concerned with the number or pecentage of commuters using bus during rush hour, but with the time it will take for commuters to travel by bus.

I think the correct answer is E

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Can someone please explain the OA. Why is the answer D?

If the buses make frequent stops during rush hour, then the commuters will not take lesser time to reach their destination by bus than by driving their cars.

Premise: A new bus lane has been constructed.
Conclusion: Now travel will be less that travel time previously by driving cars

A - Irrelevant. We are just concerned with travel time reduction
B - Irrelevant. Again we are not dealing with impact or volume but just reduction in travel time
C- Irrelevant. This will not increase effective travel time, though might increase waiting time
D- OA - Bingo! Bloody frequent stoppage of local buses is always painful. That's why I never use the local bus.
E - If this option would have been "are buses slower than previous one", then might have affected. However, as written, this has no bearing on the argument, as buses might be different but of the same speed.

Argument Breakdown
Typically takes 1 hour to reach downtown from the suburbs. NOW, city installed separate bus lanes which would expedite travel between the 2 areas.

A - This is completely irrelevant to the argument. OUT
B - No matter what means they use, the buses will still be faster since they will be on a separate lane allowing buses to move unimpeded. Evaluating this will reveal nothing. OUT
C - If they have frequent departures, more people will be able to reach downtown quicker but again evaluating this reveals nothing, as we already know buses will move unimpeded i.e. they will be faster. OUT.
D - Looks promising. If the bus makes frequent stops, then a lot of people will board the bus at most stops, meaning they commuters won't be able to travel quicker between the 2 areas. KEEP.
E - Irrelevant. OUT.

D is the answer. Only one that makes sense to evaluate.
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The answer should be B.
What if most of the population already uses buses to commute?

It hasn't been mentioned anywhere that the cars are causing the traffic. Maybe too many buses are causing the jam, and separating the bus lane would be ineffective as the majority of population will still be travelling in the bus.


daagh please advice

it typically takes close to one hour to commute at rush hour to the downtown business area by car from the neighboring suburbs that are only ten to fifteen miles away.
With these new lanes, commuters from the suburbs will now be able to use the bus to reach the downtown area during rush hour in considerably less time than they could previously by driving their cars.

We're given that it takes 1 hour to reach downtown by CAR.
And then, we're told that with the new lanes, it will take less time in a bus than it would take in a car.

Hope this helps.
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Let's make it very simple.

Boil it down to simple words : Less time via bus in the rush hour.

Assumption : Let's try to attack the conclusion :
What if bus will not start until the bus gets full...Then it takes more time..Then conclusion is flawed...Assumption : Bus starts without full passangers.
What if bus will breaks down frequently..Then it takes more time..Then conclusion is flawed...Assumption : Bus doesn't go down frequently.
What if bus comes late without notice...Then conclusion is flawed..Assumption : Bus comes on timings.

With this prephrase let's try to check the answer options that relates with timings mainly..since the argument is based on timing.

A Whether a large percentage of commuters drive to the downtown area at times other than rush hour....Not related to time
B Whether a large percentage of commuters use means other than driving to commute to the downtown area during rush hour....Irrelevant...not related to time..
C Whether the buses have frequent departure times during rush hour.....This could be the contender...
D Whether the buses make frequent stops when traveling between the suburbs and the downtown area during rush hour....This could be the correct answer.
E Whether the buses used in the new separate lanes are similar to other buses used....Not related to timing....

Between C and D.
C. Talks about frequent departure....This does carry information related to timings..but this may be quick or slow departure.
D. This one clearly talks about frequent stops...then it'll definitely get late..if you are starting via this route...so correct answer.

A very good question and the answer is D.

commuters from the suburbs will now be able to use the bus to reach the downtown area during rush hour in considerably less time than they could previously by driving their cars.

If the bus has many stoppage then it will take much more time .

VERITAS PREP OFFICIAL SOLUTION:

In this argument, the conclusion states that people will be able to get downtown in less time by bus than by driving. What is the reason given for this conclusion? That new bus lanes have been made which allow buses to move unimpeded through congested areas. As in any useful to evaluate question, you should attack this line of reasoning and consider what assumptions or flaws are inherent in the argument. At its heart, this argument assumes that because buses can move unimpeded in the new lanes, they will travel the distance faster than cars that do not have special lanes. But what if the buses are incredibly slow for other reasons? What if they have to stop every quarter mile for time consuming drop-offs and pick-ups? In analyzing the answer choices, you are looking for some piece of information relating to this assumption. For (A), what percentage of commuters drive outside of rush hour is unimportant as this argument is only concerned with the time it takes at rush hour. Similarly for (B), the argument only makes a comparison between buses and driving so other means of travel are not important. (C) is tricky as it seems like it might matter but this argument is only concerned with the time it takes to get from point A to point B at rush hour. Whether the bus leaves every 5 minutes or every 30 minutes has no impact on the conclusion as it does not change how long it would take. (D) addresses exactly the assumption discussed earlier and is thus correct. If the bus makes frequent stops then it might actually take longer than driving a car, greatly weakening the conclusion. For (E) the similarity of the buses does nothing to address the issue of time compared to driving so is not relevant. Correct answer is (D).
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#GMATNINJA What is wrong with option C sir ?

Too late to answer this... probably you're done with GMAT or already in a B school... but still whenever you see this post you'll regain your trust in GMAT club ?

Conclusion- commuters FROM SUBURBS will NOW BE ABLE TO REACH DOWNTOWN AREA DURING RUSH HOUR IN LESS TIME THAN THEY COULD EARLIER BY CAR

We are concerned with time saved and not when we reach.

Before the cars could leave anytime they want but to REACH DOWNTOWN ,it was a **** ride due to the traffic. So the time between hopping into the car in suburbs and hopping out at downtown is what we are concerned with.

C- departure time- we don't care when we leave , we just want to reach there early and cut the traffic. So C is irrelevant. (Shell game) .

Tip- whenever you read ans choice deliberately read the conclusion again. Many people try to memorize conclusion and forget what we actually are asked for.

Read the ana choice and read conclusion again.

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The argument is concerned with the actual journey, but C is concerned with pre-journey times. This is how we can rule out C .
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This is a great question that is an eye opener. Here, we must understand what is truly at stake. The passage makes the bold claim that with the new bus lanes, people will be able to reach downtown in LESS TIME. So, main theme here is the TIME taken to reach downtown.

Which of the following would be most important to know in evaluating the argument above?

A Whether a large percentage of commuters drive to the downtown area at times other than rush hour. - doesn't tell us anything about time.
B Whether a large percentage of commuters use means other than driving to commute to the downtown area during rush hour. - doesn't tell us anything about time
C Whether the buses have frequent departure times during rush hour. - you can have a bus that leaves every 10 minutes. Knowing this fact does not help us understand whether people would be able to reach downtown in LESS TIME.
D Whether the buses make frequent stops when traveling between the suburbs and the downtown area during rush hour. - BINGO. if buses using the "NEW LANES" stop frequently, then more time is used up in the journey to downtown. This therefore would tell us that the new lanes will not lead to any reduction in the time taken to travel to downtown. (D) helps us evaluate the argument.
E Whether the buses used in the new separate lanes are similar to other buses used. - Even if similar buses were used, it still does not tell us whether MORE time or LESS time is need to reach downtown (with the help of these dedicated bus lanes)

The argument states that "Because of extreme congestion" it takes a lot of time. Even if we assume busses make a lot of stops in between (that they used to make earlier also), still because of decreased congestion in new lanes, buses will take less time to reach. Please let me know where am I going wrong here