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Let's solve each question step-by-step.

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1. **Olive Oil Cost at the Supermarket**:
   - Grocery store price for a bottle: 7 euros.
   - Supermarket price: 7 euros + 2 euros = 9 euros per bottle.
   - Total cost for 7 bottles: \( 7 \times 9 = 63 \) euros.

2. **Cost of Pen and Pencil**:
   - Let the cost of the pencil be \( x \).
   - Then, the cost of the pen is \( x + 5 \).
   - The total cost is \( x + (x + 5) = 5.10 \).
   - Solving \( 2x + 5 = 5.10 \):
     \[
     2x = 0.10 \implies x = 0.05
     \]
   - Pencil costs \( 0.05 \) euros, and the pen costs \( 0.05 + 5 = 5.05 \) euros.

3. **Sum of Whole Numbers from 1 to 200**:
   - Use the formula for the sum of an arithmetic series:
     \[
     S = \frac{n}{2} \times (a + l)
     \]
     where \( n = 200 \), \( a = 1 \), and \( l = 200 \).
   - \( S = \frac{200}{2} \times (1 + 200) = 100 \times 201 = 20100 \).

4. **Area of a Rectangular Garden**:
   - Length \( = 12 \) m, Width \( = 5 \) m.
   - Area \( = 12 \times 5 = 60 \) square meters.

5. **Games Played by Joe**:
   - Let the number of games Joe played be \( x \).
   - Kyra played \( x + 4 \), and together they played 12 games.
   - Equation: \( x + (x + 4) = 12 \).
   - Solving \( 2x + 4 = 12 \):
     \[
     2x = 8 \implies x = 4
     \]
   - Joe played 4 games.

6. **Original Price of the Shirt**:
   - Sale price is \( 18 \), which is half of the original price.
   - Original price \( = 18 \times 2 = 36 \) dollars.

7. **Age of Aunt Amber**:
   - Clues:
     1. Age is between 19 and 30.
     2. Age is a multiple of 3.
     3. Age is an even number.
   - Possible even multiples of 3 between 19 and 30 are 24 and 30.
   - Age of Aunt Amber is **24**.

8. **Miles Equivalent for 11.27 Kilometers**:
   - Given that 8 km = 4.83 miles, we find the conversion factor:
     \[
     \frac{4.83}{8} = 0.60375 \text{ miles per km}
     \]
   - For 11.27 km:
     \[
     11.27 \times 0.60375 = 6.8 \text{ miles (approximately)}
     \]

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Would you like any further explanations or have any questions?

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Here are some related questions:

1. How would the total cost change in Question 1 if each bottle of olive oil increased by 3 euros instead of 2?
2. What would be the cost of 3 pens and 2 pencils based on Question 2?
3. Can you find the sum of all even numbers from 1 to 200?
4. If Kyra and Joe played different sports and one required twice as much energy, how would you analyze their energy expenditure?
5. How would you calculate the area of a triangular garden with a base of 12 m and height of 5 m?

**Tip**: For sums of sequences, try using the formula for arithmetic series, as it’s quick and efficient!

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