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.

What is the difference between the average number of HP laptop sold by Hemant on Wednesday , Thursday and Friday and that of Dell laptop on Tuesday, Wednesday and Thursday?

The correct answer is 10.

Based on the provided line graph, we extract the number of HP (blue line with circular markers) and Dell (orange line with square markers) laptops sold on the specified days:

Number of HP laptops sold:
Wednesday = 60
Thursday = 50
Friday = 110

Number of Dell laptops sold:
Tuesday = 140
Wednesday = 30
Thursday = 80

Step 1: Find the average number of HP laptops sold on Wednesday, Thursday, and Friday.

$\text{Total HP laptops (Wed + Thu + Fri)}=60+50+110=220$

$\text{Average HP laptops}=\frac{220}{3}$

Step 2: Find the average number of Dell laptops sold on Tuesday, Wednesday, and Thursday.

$\text{Total Dell laptops (Tue + Wed + Thu)}=140+30+80=250$

$\text{Average Dell laptops}=\frac{250}{3}$

Step 3: Calculate the difference between the two averages.

$\text{Required Difference}=\frac{250}{3}-\frac{220}{3}$

$\text{Required Difference}=\frac{250-220}{3}=\frac{30}{3}=10$

Therefore, the difference between the average number of HP laptops sold on Wednesday, Thursday, and Friday and Dell laptops sold on Tuesday, Wednesday, and Thursday is 10.