The table shows the percentage distribution of members (male and female) and of male members in five health clubs A to E in 2022. Club C has 1764 total members and Club E has 576 male members; overall total members = 12600 and total males = 7200.
| Club | Members (%) | Males (%) |
|---|---|---|
| A | 21 | 21 |
| B | 33 | 32 |
| C | 14 | 19 |
| D | 20 | 20 |
| E | 12 | 8 |
What is the average number of female members in health clubs A, B and C?
A1128 ✓ Correct
B1144
C1136
D1096
Correct answer: (A) 1128
Explanation
The average is 1128, so the answer is 1128.
Female members in A, B and C are 1134, 1854 and 396.
Their sum is 1134 plus 1854 plus 396, which is 3384.
The average over three clubs is 3384 divided by 3.
This equals 1128.
Each female count is the club's members minus its male members.
So the mean female membership of A, B and C is 1128.
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