The average weight of 4 girls is 25kg what their total weight?

The total weight of the 4 girls can be calculated by multiplying the average weight by the number of girls.

Average weight = 25kg

Number of girls = 4

Total weight = Average weight * Number of girls

Total weight = 25kg * 4

Total weight = 100kg

Therefore, the total weight of the 4 girls is 100kg.