The table shows the number of employees in five colleges A to E, with the ratio of Males to Females (M:F) among them.
| College | Employees | M:F Ratio |
|---|---|---|
| A | 3040 | 13:6 |
| B | 3360 | 4:3 |
| C | 2920 | 9:11 |
| D | 2760 | 10:13 |
| E | 2840 | 13:7 |
What is the ratio of female employees working in College D to that in College E?
A7 : 4
B780 : 497 ✓ Correct
C390 : 491
D9 : 5
Correct answer: (B) 780 : 497
Explanation
The ratio of female employees in College D to College E is 780 to 497.
Female in D is 2760 times 13/23, which is 1560.
Female in E is 2840 times 7/20, which is 994.
The required ratio is 1560 to 994.
Dividing both terms by 2 gives 780 to 497.
This ratio does not simplify further as 780 and 497 share no common factor.
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