`{:("Quantity A","Quantity B"),(10%" of "643.38,20%" of "321.69):}`

Answer

To solve the problem, we need to calculate the two quantities given:

**Quantity A:** 10% of 643.38
**Quantity B:** 20% of 321.69

Let's calculate each quantity step by step.

### Step 1: Calculate Quantity A (10% of 643.38)

To find 10% of 643.38, we can use the formula:

\[ \text{Percentage} = \frac{\text{Percentage Value}}{100} \times \text{Total} \]

So, for Quantity A:

\[ \text{Quantity A} = \frac{10}{100} \times 643.38 \]

### Step 2: Simplify Quantity A

Now, simplify the calculation:

\[ \text{Quantity A} = 0.10 \times 643.38 = 64.338 \]

### Step 3: Calculate Quantity B (20% of 321.69)

Now, we will calculate Quantity B using the same formula:

\[ \text{Quantity B} = \frac{20}{100} \times 321.69 \]

### Step 4: Simplify Quantity B

Now, simplify the calculation:

\[ \text{Quantity B} = 0.20 \times 321.69 = 64.338 \]

### Step 5: Compare the Two Quantities

Now that we have both quantities:

- Quantity A = 64.338
- Quantity B = 64.338

Since both quantities are equal, we can conclude:

\[ \text{Quantity A} = \text{Quantity B} \]

### Final Conclusion

Both quantities are equal.

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