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 |
The number of male employees working in Colleges A and C together is approximately what percent more than the number of female employees working in Colleges B and D together?
A9
B15
C11
D13 ✓ Correct
Correct answer: (D) 13
Explanation
Male employees in colleges A and C exceed female employees in colleges B and D by about 13 percent.
Male in A is 3040 times 13/19, which is 2080.
Male in C is 2920 times 9/20, which is 1314, so A and C together give 3394.
Female in B is 3360 times 3/7, which is 1440.
Female in D is 2760 times 13/23, which is 1560, so B and D together give 3000.
The difference is 3394 minus 3000, which is 394.
394 divided by 3000 times 100 is about 13.13 percent, rounded to 13.
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