Read the given information carefully and answer the question that follows.

The data below provides details about two categories of staff (loaders and drivers) across three logistics hubs: Hub X, Hub Y, and Hub Z.
For Hub X – the combined total of loaders and drivers is 80.
For Hub Y – the total number of loaders is 5 more than the total number of loaders in Hub Z.
For Hub Z – the total number of loaders is 10 less than the total number of drivers.
Note – the total number of drivers in Hub X is 25 less than the total number of loaders in Hub Y.
Total staff in Hub Z is 10 more than total staff in Hub X, and the total number of drivers across all three hubs is 110.

Find the total number of staff in Hub Y.

The correct answer is 85.

Let us analyze the given information step-by-step to calculate the total staff in Hub Y.

Step 1: Find the total staff in Hub Z
We are given that the combined total staff in Hub X is 80.
Total staff in Hub Z is 10 more than total staff in Hub X:
$\text{Total staff in Hub Z}=80+10=90$

Step 2: Calculate the number of loaders and drivers in Hub Z
Let the number of drivers in Hub Z be $D_Z$ and the number of loaders in Hub Z be $L_Z$.
We are given that the total number of loaders in Hub Z is 10 less than the total number of drivers:
$L_Z=D_Z-10$
Since the total staff in Hub Z is 90:
$L_Z+D_Z=90$
$(D_Z-10)+D_Z=90$
$2D_Z-10=90$
$2D_Z=100$
$D_Z=50$
Now, find the number of loaders in Hub Z:
$L_Z=50-10=40$

Step 3: Calculate loaders in Hub Y and drivers in Hub X
The total number of loaders in Hub Y is 5 more than the total number of loaders in Hub Z:
$L_Y=40+5=45$
The total number of drivers in Hub X is 25 less than the total number of loaders in Hub Y:
$D_X=45-25=20$

Step 4: Calculate drivers in Hub Y
The total number of drivers across all three hubs is 110:
$D_X+D_Y+D_Z=110$
$20+D_Y+50=110$
$70+D_Y=110$
$D_Y=110-70=40$

Step 5: Calculate total staff in Hub Y
Total staff in Hub Y is the sum of loaders and drivers in Hub Y:
$\text{Total staff in Hub Y}=L_Y+D_Y=45+40=85$

Thus, the total number of staff in Hub Y is 85.