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Expert replies
by clock60 » Sat Nov 20, 2010 1:49 pm
For the last five years, the XYZ Courier Company has made regular delivery trips between Town A and Town B. The average time taken by the company’s drivers to drive the round trip between the two towns, excluding the time taken for loading, unloading, and delivery, over that period has been 80 minutes. John, a driver for XYZ, needs to make a personal trip between the two towns; he figures that he should allow approximately 80 minutes for the round trip.

Which of the following, if true, does not call John’s conclusion into question?
a)The route between Town A and Town B has been plagued by increasing congestion over the last five years, as the area's population has doubled during that time.
b)Most of XYZ’s courier vehicles are heavy trucks, for which speed limits are lower than for passenger vehicles.
c)Many of the packages carried by XYZ between Town A and Town B are large, high-security packages, for which the processes of loading, unloading, and delivery can take up to half the length of the trip itself.
d)John will make his personal trip at an hour when XYZ does not make delivery trips.
e)Before a freeway was built between Town A and Town B two years ago, the only routes between the two towns were state highways with multiple traffic lights and reduced-speed downtown zones
ao is C
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Source: — Critical Reasoning |

by shovan85 » Sat Nov 20, 2010 8:38 pm
IMO C

A: The impact of traffic and population increase may or may not cast doubt on John's estimation as their impact on XYZ vehicles may or may not be same.

B: Passenger car speed is greater than Truck. Definitely calls into question.

C: The premises have mentioned that "The average time taken by the company's drivers to drive the round trip between the two towns, excluding the time taken for loading, unloading, and delivery, over that period has been 80 minutes."
Thus if the processes take 1000 days also do not add up to the trip time. Clearly will not call John's Approximation into question.

D: We are not concerned. As we need to focus on his estimation of 80 mins we will not bother if he makes trip in an hour.

E: The scenario is same for both XYZ and John. So we cannot say anything about John's approximation.
If the problem is Easy Respect it, if the problem is tough Attack it
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by pradeepkaushal9518 » Sat Nov 20, 2010 8:43 pm
yes he can adjust his personal trip in other activities so C
A SMALL TOWN GUY
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