The table shows the percentage distribution of children in five villages (V1 to V5) and the percentage attending school. Total children = 5800; total attending school = 3600.
| Village | Children (%) | Attending School (%) |
|---|---|---|
| V1 | 16 | 15 |
| V2 | 24 | 28 |
| V3 | 11 | 14 |
| V4 | 18 | 21 |
| V5 | 31 | 22 |
What is the average number of children who do not attend school from villages V2, V3 and V5 together?
The average is 508, so the answer is 508.
Children in V2, V3 and V5 are 24% plus 11% plus 31% of 5800, which is 66% of 5800, giving 3828.
Children attending school from these villages are 28% plus 14% plus 22% of 3600, which is 64% of 3600, giving 2304.
Children not attending school from the three villages are 3828 minus 2304, which is 1524.
The average over the three villages is 1524 divided by 3.
This equals 508.
The non-attending total is found first, then divided by the number of villages to give the average.
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