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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

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Two Part Analysis
Quant - Fitting Values
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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.

Number of toppings

Number of fillings

6

12

24

36

48

8

Solution

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 = \(8 \times 8 \times 24 = 1536\)
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