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

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: $11.27 \times 0.60375 = 6.8 \text{ miles (approximately)}$

Would you like any further explanations or have any questions?

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!