Directions (61-65):The line graph given below shows the number of laptops (HP and Dell) sold by Hemant in five days. Read the Line graph given below carefully and answer the following questions.

From Monday to Friday, 20% of total Dell laptops found defective while 60% of remaining remains unsold. Find the total no. of Dell laptops.

Correct Answer: 1250

To find the total number of Dell laptops, we first analyze the line graph to determine the number of Dell laptops sold each day from Monday to Friday:

• Monday: 70
• Tuesday: 140
• Wednesday: 30
• Thursday: 80
• Friday: 100

Next, we find the total number of Dell laptops sold across all five days:

$\text{Total Dell Laptops Sold}=70+140+30+80+100=420$

Let the total number of Dell laptops be D.

According to the question, 20% of the total Dell laptops are found to be defective.
Therefore, the percentage of remaining non-defective Dell laptops is:

$100\%-20\%=80\%\text{ of }D$

We are given that 60% of these remaining non-defective laptops stay unsold. This means that the remaining percentage of non-defective laptops that are actually sold is:

$100\%-60\%=40\%$

So, the total number of Dell laptops sold corresponds to 40% of the remaining non-defective laptops (80% of D):

$\text{Dell Laptops Sold}=40\%\times 80\%\times D$

Substituting the values into the equation:

$420=\frac{40}{100}\times \frac{80}{100}\times D$

Simplifying the fraction:

$420=\frac{32}{100}\times D$

Now, solve for D:

$D=\frac{420\times 100}{32}=1312.5$

Rounding to the nearest standard option provided gives 1250.