The table shows employees in four colleges A to D, split into males, females, teaching and non-teaching. Dashes are missing values to be calculated if required.
| College | Employees | Males | Females | Teaching Males | Teaching Females | Non-teaching Males | Non-teaching Females |
|---|---|---|---|---|---|---|---|
| A | 756 | 526 | — | 325 | — | — | — |
| B | — | — | — | — | 159 | 215 | 254 |
| C | — | 159 | — | — | — | — | — |
| D | 224 | 142 | 82 | — | — | — | — |
In College D, if the number of teaching females and non-teaching females are equal, and the number of teaching males is 5 more than the number of teaching females, then the difference between non-teaching males and non-teaching females is
A224
B102
C55 ✓ Correct
D79
Correct answer: (C) 55
Explanation
The difference is 55, so the answer is 55.
College D has 82 females, split equally into teaching and non-teaching females.
Let each be x, so x plus x equals 82, giving x equal to 41.
So teaching females and non-teaching females are 41 each.
Teaching males are 5 more than teaching females, which is 46.
College D has 142 males, so non-teaching males are 142 minus 46, which is 96.
The difference is 96 minus 41, which is 55.
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