Bhaichung was observing the pattern of people entering and leaving a car service centre. There was a single window where customers were being served. He saw that people inevitably came out of the centre in the order that they went in. However, the time they spent inside seemed to vary a lot: some people came out in a matter of minutes while for others it took much longer.
The centre operates on a first-come-first-served basis, but with variable service times, depending on specific customer needs.
Bhaichung observed the operational pattern of a car service centre, focusing on how customers entered and exited the facility. His observations provide key insights into the service mechanism at the centre. Let's break down Bhaichung's observations to understand the system.
Car Service Centre Observations
Bhaichung noted two primary aspects of the car service centre's operation:
- Order of Service: He observed that people "inevitably came out of the centre in the order that they went in." This is a crucial piece of information. It means that the person who entered first was also the first person to exit, the second person to enter was the second to exit, and so on. This pattern is characteristic of a 'First-Come, First-Served' (FCFS) or 'First-In, First-Out' (FIFO) queuing system. This shows a clear, predictable order of service.
- Service Time Variation: Bhaichung also saw that "the time they spent inside seemed to vary a lot: some people came out in a matter of minutes while for others it took much longer." This indicates that while the order of service is fixed (FCFS), the actual duration each customer spends receiving service is not uniform. This variability in service times could be due to different types of car services required (e.g., a quick oil change versus a major repair), varying complexity of issues, or specific customer needs for their vehicle.
Analyzing the Car Service System
Given Bhaichung's observations, we can draw clear conclusions about how the car service centre functions:
- The principle of "people inevitably came out in the order that they went in" directly points to a first-come-first-served queuing discipline. This means customers are served in the sequence they arrive, ensuring fairness in the service queue.
- The fact that "the time they spent inside seemed to vary a lot" signifies that the service times are variable. This is typical in many real-world service environments where different customers have different needs or require different levels of attention and time for their car service.
Evaluating the Options for Car Service
Let's examine each provided option in light of Bhaichung's findings regarding the car service centre:
| Option Number | Option Text | Analysis |
|---|---|---|
| 1 | The centre operates on a first-come-first-served basis, but with variable service times, depending on specific customer needs. | This option perfectly aligns with both of Bhaichung's core observations. The phrase "first-come-first-served basis" matches the consistent exit order ("came out in the order that they went in"), and "variable service times, depending on specific customer needs" accurately explains why the time spent inside varied a lot. This conclusion is strongly supported by the evidence. |
| 2 | Customers were served in an arbitrary order, since they took varying amounts of time for service completion in the centre. | This option contradicts the observation that people "came out... in the order that they went in." An "arbitrary order" would mean no fixed sequence, which is the opposite of what Bhaichung saw. The varying service times do not imply an arbitrary order; variable service times can exist perfectly within a fixed order system like first-come-first-served. |
| 3 | Since some people came out within a few minutes of entering the centre, the system is likely to operate on a last-come-first-served basis. | This option directly contradicts the crucial observation that people "came out... in the order that they went in." A "last-come-first-served" (LIFO) system would mean the last person to enter would be the first to exit, which is completely contrary to Bhaichung's findings. The quick service for some individuals is simply an instance of a short variable service time within a first-come-first-served system. |
| 4 | Entering the centre early ensured that one would have shorter service times and most people attempted to do this. | This option is not supported by Bhaichung's observations. While entering early might reduce the waiting time in a queue, it doesn't guarantee "shorter service times" for the actual service itself. Bhaichung explicitly stated that service times "seemed to vary a lot," indicating that even early entrants could have long service times if their car's needs required it. The claim about "most people attempted to do this" is also an unsupported inference based solely on the provided information. |
Based on the detailed analysis of Bhaichung's observations, the only conclusion that is fully supported by the evidence is that the car service centre uses a first-come-first-served system with variable service times due to specific customer needs.
Important Questions from Critical Reasoning
As a responsible person, which of the following is not advisable?
- A, B, and C have a few chocolates among themselves. A gives to each of the other two half the number of chocolates they already have. Similarly B and C (in that order) give each of the other two half the number of chocolates each of them already has. Now, if each of them has the same number of chocolates, what could be the minimum number of chocolates they have among themselves?
Given question has main statement followed by four statements. Choose the ordered pair of statements, where the first statement implies the second, and the two statements are logically consistent with the main statement.
When she takes an examination, she clears it.
A. she took an examination
B. she did not take an examination
C. she cleared it.
D. she did not clear it.
You are alone in your house and there is a danger of thieves around. You hear a knock on the door. What should be your most logical action?
While traveling in a train, you notice that a lady from the coach behind you falls from the stairs of the train. What should be your best rational course of action?
