Question

the exchange rate between non-fixed currencies continuously fluctuates. the following chart shows the exchange rate of the pound sterling to the japanese yen over a period of six days.

\

$$\begin{array}{|c|c|} \\hline \\text{day} & \\text{\\pounds}:\\text{\\yen} \\\\ \\hline \\text{monday} & 1:148.176 \\\\ \\hline \\text{tuesday} & 1:144.209 \\\\ \\hline \\text{wednesday} & 1:149.890 \\\\ \\hline \\text{thursday} & 1:141.014 \\\\ \\hline \\text{friday} & 1:138.650 \\\\ \\hline \\text{saturday} & 1:143.007 \\\\ \\hline \\end{array}$$

if grace traded \yen 34,712 for \pounds 242.73, on what day did she make her exchange?
a. monday
b. tuesday
c. thursday
d. saturday

Explanation:

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<reasoning>

Calculate the exchange rate

Using the Currency Conversion knowledge point
\[
\text{Exchange Rate } (\text{Yen per Pound}) = \frac{34712}{242.73} \approx 143.007
\]

Match the rate to the table

Using the Table Reading knowledge point
\[

$$\begin{aligned} &\text{Monday: } 148.176 \\ &\text{Tuesday: } 144.209 \\ &\text{Wednesday: } 149.890 \\ &\text{Thursday: } 141.014 \\ &\text{Friday: } 138.650 \\ &\text{Saturday: } 143.007 \quad (\text{Match}) \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-option>a. Monday</mcq-option>
<mcq-option>b. Tuesday</mcq-option>
<mcq-option>c. Thursday</mcq-option>
<mcq-correct>d. Saturday</mcq-correct>
</answer>

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Answer:

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<reasoning>

Calculate the exchange rate

Using the Currency Conversion knowledge point
\[
\text{Exchange Rate } (\text{Yen per Pound}) = \frac{34712}{242.73} \approx 143.007
\]

Match the rate to the table

Using the Table Reading knowledge point
\[

$$\begin{aligned} &\text{Monday: } 148.176 \\ &\text{Tuesday: } 144.209 \\ &\text{Wednesday: } 149.890 \\ &\text{Thursday: } 141.014 \\ &\text{Friday: } 138.650 \\ &\text{Saturday: } 143.007 \quad (\text{Match}) \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-option>a. Monday</mcq-option>
<mcq-option>b. Tuesday</mcq-option>
<mcq-option>c. Thursday</mcq-option>
<mcq-correct>d. Saturday</mcq-correct>
</answer>

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