Table shows the percentage of people working the night shift and the percentage of females among them, in six industries. Total night-shift people = 80500.
| Industry | Night Shift (%) | Females (%) |
|---|---|---|
| IT | 12 | 20 |
| Sports | 18 | 20 |
| Call centre | 32 | 45 |
| Sales | 8 | 60 |
| Banking | 15 | 40 |
| Chemicals | 16 | 15 |
What is the approximate average number of females working in the night shift from all the industries together?
A4454 ✓ Correct
B8962
C6652
D5646
Correct answer: (A) 4454
Explanation
The average is about 4454, so the answer is 4454.
For each industry the females are its share of 80500 times its female share.
Adding these figures across all six industries gives about 26726 females in all.
The average is this total divided by the six industries.
So it is about 26726 divided by 6.
That is about 4454.
So the average number of females is about 4454.
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