Question : The table below shows the number of laptops sold by the 4 sellers and the ratio of Brand 1 laptops sold to Brand 2 laptops sold.
| Seller | Total laptops sold | Brand 1 laptops sold: Brand 2 laptops sold |
| A | 4000 | 3 : 1 |
| B | 6000 | 2 : 1 |
| C | 8000 | 5 : 3 |
| D | 5000 | 1 : 4 |
The number of Brand 1 laptops sold by A seller is how many more than the number of Brand 2 laptops sold by B seller?
Option 1: 1200
Option 2: 800
Option 3: 1000
Option 4: 600
Correct Answer: 1000
Solution :
The number of Brand 1 laptops sold by A seller $=4000×\frac{3}{4} =3000$
The number of Brand 2 laptops sold by B seller $=6000×\frac{1}{3} =2000$
Difference = 3000 – 2000 = 1000
Hence, the correct answer is 1000.
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