At a certain restaurant, each sandwich served has three components-bread, topping, and filling. A customer orders a sandwich by choosing...
GMAT Two Part Analysis : (TPA) Questions
At a certain restaurant, each sandwich served has three components-bread, topping, and filling. A customer orders a sandwich by choosing exactly one type of each component from a list of options. There are 8 bread options, and there are fewer topping options than filling options. In all, there are exactly 1,536 possible sandwich orders.
In the table, select the number of toppings and the number of fillings that are jointly consistent with the given information. Make only two selections, one in each column.
Phase 1: Owning the Dataset
Visual Representation
Sandwich Components:
Bread Options: [1] [2] [3] [4] [5] [6] [7] [8] = 8 options
Topping Options: [?] = T options (T < F)
Filling Options: [?] = F options
Total Combinations = \(8 \times \mathrm{T} \times \mathrm{F} = 1536\)
Key Given Information:
- Each sandwich needs exactly one of each component
- 8 bread options
- Fewer topping options than filling options (\(\mathrm{T} < \mathrm{F}\))
- Total possible sandwiches = 1,536
Phase 2: Understanding the Question
Setting Up the Equation
Since total combinations = bread × topping × filling:
\(8 \times \mathrm{T} \times \mathrm{F} = 1536\)
Dividing both sides by 8:
\(\mathrm{T} \times \mathrm{F} = 1536 ÷ 8 = 192\)
What We're Looking For:
- Two numbers from the choices that multiply to 192
- The smaller number = toppings
- The larger number = fillings
Phase 3: Finding the Answer
Systematic Check of Options
We need pairs from [6, 12, 24, 36, 48, 8] that multiply to 192.
Let's check systematically:
- \(6 \times ? = 192 → ? = 32\) (not in choices)
- \(8 \times ? = 192 → ? = 24\) ✓ (24 is in choices!)
- \(12 \times ? = 192 → ? = 16\) (not in choices)
- \(24 \times ? = 192 → ? = 8\) ✓ (8 is in choices!)
? Stop here - we found valid pairs: (8,24) and (24,8)
Applying the Constraint
Since toppings < fillings:
- If T = 8 and F = 24: \(8 < 24\) ✓
- If T = 24 and F = 8: \(24 < 8\) ✗
Therefore:
- Number of toppings = 8
- Number of fillings = 24
Verification
\(8 \text{ bread} \times 8 \text{ toppings} \times 24 \text{ fillings} = 8 \times 8 \times 24 = 1536\) ✓
Phase 4: Solution
Statement 1 (Number of toppings): 8
Statement 2 (Number of fillings): 24
These values satisfy all conditions:
- Their product equals 192
- Toppings (8) < Fillings (24)
- Total combinations = \(8 \times 8 \times 24 = 1536\)