10. TieH.C.F. of two numbers is 3 . Which of the following pairs represents the two numbers in the options below? A. 12 and 17 B. $$ \quad 10 $$ and 20 C. 9 and 15 D. 8 and 12 E. 4 and 6 15. 11. $$ 25 \% $$ of 500.00 is less than one of the following by $$ \$ 80.00 $$. A. $$ \$ 195.00 $$ B. $$ \quad 2205.00 $$ C. $$ \quad \$ 225.00 $$ D. $$ \quad $$ 230.00 E. $$ \quad \$ 240.00 $$ 12. Change $$ \$ 32.08 $$ to kobo. A. $$ \quad 320 $$ B. 328 C. $$ \quad 330 $$ D. 3,208 E. 3,280 13. How many NIO.00 added up to make $$ 211,000.00 ? $$

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### Problem 10: Finding the Pair of Numbers with H.C.F. of 3

We need to find which pair of numbers has a Highest Common Factor (H.C.F.) of 3.

**Options:**
- A. 12 and 17
- B. 10 and 20
- C. 9 and 15
- D. 8 and 12
- E. 4 and 6

**Step 1: Calculate H.C.F. for each pair.**

1. **A. 12 and 17**
   - Factors of 12: 1, 2, 3, 4, 6, 12
   - Factors of 17: 1, 17
   - H.C.F. = 1

2. **B. 10 and 20**
   - Factors of 10: 1, 2, 5, 10
   - Factors of 20: 1, 2, 4, 5, 10, 20
   - H.C.F. = 10

3. **C. 9 and 15**
   - Factors of 9: 1, 3, 9
   - Factors of 15: 1, 3, 5, 15
   - H.C.F. = 3

4. **D. 8 and 12**
   - Factors of 8: 1, 2, 4, 8
   - Factors of 12: 1, 2, 3, 4, 6, 12
   - H.C.F. = 4

5. **E. 4 and 6**
   - Factors of 4: 1, 2, 4
   - Factors of 6: 1, 2, 3, 6
   - H.C.F. = 2

**Conclusion for Problem 10:**
The pair that has an H.C.F. of 3 is **C. 9 and 15**.

---

### Problem 11: Finding the Amount

We need to find which amount is $$ \$80.00 $$ more than $$ 25\% $$ of $$ 500.00 $$.

**Step 1: Calculate $$ 25\% $$ of $$ 500.00 $$.**
$$
25\% \text{ of } 500 = \frac{25}{100} \times 500 = 125
$$

**Step 2: Add $$ 80.00 $$ to $$ 125 $$.**
$$
125 + 80 = 205
$$

**Step 3: Compare with the options.**
- A. $$ 195.00 $$ (not greater)
- B. $$ 2205.00 $$ (not relevant)
- C. $$ 225.00 $$ (greater)
- D. $$ 230.00 $$ (greater)
- E. $$ 240.00 $$ (greater)

**Conclusion for Problem 11:**
The amount that is $$ \$80.00 $$ more than $$ 125 $$ is **C. $$ 225.00 $$**.

---

### Problem 12: Converting Dollars to Kobo

We need to convert $$ \$32.08 $$ to kobo.

**Step 1: Understand the conversion.**
1 dollar = 100 kobo.

**Step 2: Calculate the conversion.**
$$
32.08 \text{ dollars} = 32.08 \times 100 = 3208 \text{ kobo}
$$

**Conclusion for Problem 12:**
The amount in kobo is **D. 3,208**.

---

### Problem 13: Finding the Number of NIO.00 to Make 211,000.00

We need to find how many NIO.00 are needed to make $$ 211,000.00 $$.

**Step 1: Understand the problem.**
If we denote the number of NIO.00 as $$ n $$, then:
$$
n \times 1 = 211,000
$$

**Step 2: Solve for $$ n $$.**
$$
n = 211,000
$$

**Conclusion for Problem 13:**
The number of NIO.00 needed is **211,000.00**.

---

In summary:
- Problem 10: C. 9 and 15
- Problem 11: C. $$ 225.00 $$
- Problem 12: D. 3,208
- Problem 13: 211,000.00
- Problem 10: C. 9 and 15 - Problem 11: C. \$225.00 - Problem 12: D. 3,208 - Problem 13: 211,000.00

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