Table shows the percentage of doctors and of female doctors in seven cities A to G. Total doctors = 2400; male:female = 5:3.
| City | Doctors (%) | Female Doctors (%) |
|---|---|---|
| A | 19 | 24 |
| B | 21 | 16 |
| C | 9 | 11 |
| D | 12 | 8 |
| E | 17 | 16 |
| F | 14 | 19 |
| G | 8 | 6 |
The number of female doctors is more than the average number of female doctors, taking all seven cities together, in exactly how many cities?
A2
B3
C4 ✓ Correct
D6
Correct answer: (C) 4
Explanation
The number is more than the average in exactly 4 cities, so the answer is 4.
The total females are 3 of 8 parts of 2400, which is 900, so the average per city is about 129.
Female doctors are City A 216, City B 144, City C 99 and City D 72.
They are City E 144, City F 171 and City G 54.
The cities above the average of about 129 are A, B, E and F.
That is four cities in all.
So the answer is 4.
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