Question: The exchange rates from pounds (£) to euros (€) in two different airports are shown below.
Robyn converted some pounds at one of these airports and received €68.31
What is the smallest amount of money that she could have converted?
Airport 1: £1 = €1.15
Airport 2: £1 = €1.08
1. **State the problem:**
Robyn received €68.31 after converting pounds at one of two airports with different exchange rates. We need to find the smallest amount of pounds she could have converted.
2. **Identify the exchange rates:**
- Airport 1: £1 = €1.15
- Airport 2: £1 = €1.08
3. **Set up the formulas:**
Let $x_1$ be the amount in pounds converted at Airport 1, and $x_2$ be the amount in pounds converted at Airport 2.
The euros received are given by:
$$
\text{Euros} = \text{Pounds} \times \text{Exchange Rate}
$$
So,
$$
68.31 = x_1 \times 1.15 \quad \text{or} \quad 68.31 = x_2 \times 1.08
$$
4. **Calculate pounds for each airport:**
For Airport 1:
$$
x_1 = \frac{68.31}{1.15}
$$
For Airport 2:
$$
x_2 = \frac{68.31}{1.08}
$$
5. **Simplify each fraction:**
$$
x_1 = \frac{68.31}{1.15} = \frac{68.31}{\cancel{1.15}} \times \frac{1}{\cancel{1}} = 59.4
$$
$$
x_2 = \frac{68.31}{1.08} = \frac{68.31}{\cancel{1.08}} \times \frac{1}{\cancel{1}} = 63.25
$$
6. **Interpretation:**
- At Airport 1, Robyn converted approximately £59.40.
- At Airport 2, Robyn converted approximately £63.25.
7. **Answer:**
The smallest amount of money she could have converted is **£59.40** at Airport 1.