A company offered 150 laptops at a 20% discount during a 5-day sale. The line graph shows the number of laptops left unsold at the end of each day.

1. Determine the number of laptops sold on each day by finding the difference in unsold laptops from the previous day

Number of laptops sold on Day 1: $150 - 150 = 0$
Number of laptops sold on Day 2: $150 - 130 = 20$
Number of laptops sold on Day 3: $130 - 40 = 90$
Number of laptops sold on Day 4: $40 - 20 = 20$
Number of laptops sold on Day 5: $20 - 20 = 0$

2. Identify the day with the highest number of laptops sold

The highest number of laptops sold is $90$, which occurred on Day 3.

1. Find the number of laptops sold on the first 2 days

Number of laptops unsold at the end of Day 2 = $130$
Number of laptops sold on the first 2 days = $150 - 130 = 20$

2. Calculate the percentage of laptops sold on the first 2 days

Percentage = $\frac{20}{150} \times 100\% = \frac{2}{15} \times 100\% = \frac{40}{3}\% = 13\frac{1}{3}\%$

1. Determine the number of laptops sold during the sale and after the sale

From the graph, the number of laptops left unsold at the end of Day 5 is $20$.
Laptops sold during the sale = $150 - 20 = 130$.
Laptops sold after the sale = $20$.

2. Calculate the original price of the laptop

The discounted price during the sale is $20\%$ off, which is $80\%$ of the original price.
$80\% \rightarrow \char36{}1288$
$1\% \rightarrow \char36{}1288 \div 80 = \char36{}16.10$
Original price ($100\%$) = $16.10 \times 100 = \char36{}1610$

3. Calculate the price of the laptop after the sale

After the sale, the discount is $50\%$.
Price after sale = $50\%$ of $\char36{}1610 = \char36{}805$

4. Calculate the total amount of money collected

Money from laptops sold during the sale = $130 \times \char36{}1288 = \char36{}167440$
Money from laptops sold after the sale = $20 \times \char36{}805 = \char36{}16100$
Total money collected = $\char36{}167440 + \char36{}16100 = \char36{}183540$