Correct Answer - Option 1 : 31.25%
Given:
Total laptops sold in three stores are 3000.
The number of HP laptops sold by store X is 40 more than the number of HP laptops sold by store Z.
The average number of HP laptops sold by store X and store Y is 350.
Store X alone sold 300 HP laptops.
Store Y sold a total of 575 laptops.
The ratio of the number of Dell laptops sold by store X and store Z is 2 ∶ 3.
Calculation:
From the above-given data, we can say that HP laptops sold by store X and store Y = (2 × 350) = 700
Store X alone sold 300 HP laptops
So, the number of HP laptops sold by store Y = (700 - 300) = 400
So, the number of Dell laptops sold by store Y = (575 - 400) = 175
Now, according to the question, the number of HP laptops sold by store X is 40 more than the number of HP laptops sold by store Z
So, the number of HP laptops sold by store Z = (300 - 40) = 260
Now, total laptops that are sold = 3000
Remaining Dell laptops sold = {3000 - (300 + 400 + 260 + 175)}
⇒ 1865
According to the question, the ratio of the number of Dell laptops sold by store X and store Z is 2 ∶ 3
So, the number of Dell laptops sold by store X = {1865 × (2/5)}
⇒ 746
Now, the number of Dell laptops sold by store Z = {1865 × (3/5)}
⇒ 1119
We can use a table and put these data.
Name of the brand |
X |
Y |
Z |
Dell |
746 |
175 |
1119 |
HP |
300 |
400 |
260 |
The total number of HP laptops sold by all three stores = (300 + 400 + 260) = 960
So, the percentage = (300/960) × 100%
⇒ 31.25%
∴ The number of HP laptops sold by store X is 31.25% of the total number of HP laptops sold by all three stores.