본문 바로가기
반응형

Beginner Level:

Step-by-Step Solution

1. Analyze the Conditions:

l   From condition 1, A did not bring an apple, so A must have brought either a banana or an orange.

l   From condition 2, B brought a banana. Therefore, A could not have brought a banana, meaning A brought an orange.

l   From condition 3, C did not bring an orange. Thus, C must have brought an apple.

2. Apply Hints to Draw a Conclusion:

l   B brought the banana, A brought the orange, and C brought the apple.

3. Final Answer:

l   A brought an orange, B brought a banana, and C brought an apple.

 


 

Intermediate Level:

Step-by-Step Solution

1. Analyze the Conditions:

l   From condition 1, A ordered after B.

l   From condition 2, C was the last to place an order.

l   From condition 3, D ordered at 10 a.m., so D is likely the first to order.

l   From condition 4, A ordered after D, meaning A cannot be the first to order.

2. Evaluate Conditions in Sequence:

l   Based on condition 3, D ordered first.

l   From condition 1, A ordered after B, so A must come after B.

l   From condition 2, C ordered last, making C the fourth in sequence.

3. Find the Possible Order:

l   If D is first and C is last, A and B must occupy the second and third spots.

l   From condition 1, A comes after B. Thus, B is second and A is third.

4. Conclusion:

l   The order of the customers is D → B → A → C.

 


Advanced Level:

Step-by-Step Solution

1. Analyze the Conditions:

l   The airline owns five planes, each with a maximum capacity of 150 passengers.

l   All five cities must have at least one flight per week.

l   Weekly passenger demand for each city is as follows:

    City A: 200 passengers

    City B: 300 passengers

    City C: 500 passengers

    City D: 150 passengers

    City E: 250 passengers

 

2. Calculate Flight Requirements by City:

l   City A: Needs 200 passengers → requires two planes (one plane can only carry 150 passengers).

l   City B: Needs 300 passengers → requires two planes.

l   City C: Needs 500 passengers → requires four planes.

l   City D: Needs 150 passengers → requires one plane.

l   City E: Needs 250 passengers → requires two planes (one plane for 150 passengers, another for the remaining 100 passengers).

 

3. Adjust for Plane Limitations and Optimize Allocation:

l   With only five planes available, prioritize cities based on passenger demand to maximize revenue.

l   Allocate as follows:

    City C receives two planes (300 passengers).

    City A receives one plane (150 passengers).

    City B receives one plane (150 passengers).

    City D receives one plane (150 passengers).

l  City E is deprioritized due to plane constraints but could be partially serviced later if resources allow.

 

4. Final Allocation and Conclusion:

l  City C: 2 planes (300 passengers)

l  City A: 1 plane (150 passengers)

l  City B: 1 plane (150 passengers)

l  City D: 1 plane (150 passengers)

반응형