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 ratio of the number of males to the number of females working in the night shift from the call centre industry?
A9:11
B11:9 ✓ Correct
C11:7
D7:11
Correct answer: (B) 11:9
Explanation
The ratio is 11 to 9, so the answer is 11 to 9.
In the call centre industry, 45 percent of the night-shift workers are female.
So the remaining 55 percent are male.
The male and female shares are therefore in the ratio 55 to 45.
Dividing both by 5 gives 11 to 9.
The total number of call-centre workers cancels out of the ratio.
So the ratio of males to females is 11 to 9.
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