Of the 200 employees in a certain company, 25 percent will be relocated to City X and the remaining 75 percent will be relocated to City Y. However, 40 percent of the employees prefer City Y and 60 percent prefer City X. What is the highest possible number of employees who will be relocated to the city they prefer?
The best way to solve questions containing four different items is to draw a matrix box. As per the question:
Total employees relocated to X = 25% of 200 = 50
Total employees relocated to Y = 75% of 200 = 150
Total employees who prefer city X = 60% of 200 = 120
Total employees who prefer city Y = 40% of 200 = 80
This can be represented in a matrix box as shown below:
Matrix_1.png [ 2.51 KiB | Viewed 1027 times ]
So we need to maximize the cells marked with green i.e.
employees who prefer city X and gets relocated to city X + employees who prefer city Y and gets relocated to city Y.
Maximum possible value of Prefer X - Relocate X
cell is 50. Then the only possible value for Prefer X - Relocate Y
cell is 70 because the total employees who prefer city X is 120.
As Prefer X - Relocate X
cell is 50, so Prefer Y - Relocate X
cell has to be 0 because total employees actually relocated to city X is 50. And if Prefer Y - Relocate X
is 0 then Prefer Y - Relocate Y
has to be 80 because total employees who preferred city Y is 80.
So now the completed matrix box looks like this:
Matrix_2.png [ 2.85 KiB | Viewed 1027 times ]
So total sum of green cells (employees who will be relocated to the city they prefer) = 50 + 80 = 130
Hence the correct answer is D
Do not forget to hit the Kudos button on your left if you find my post helpful
Collection of some good questions on Number System