In order to sign a purchase contract with customers, Wang Laohan estimated the total quality of fish in his fish pond, and fished out 100 for the first time, weighing 184 kg.

This is a sample survey.

Initially marked 100 pieces,

This means that there are always 100 marked in the pond.

There are x fish in all.

Because the newly caught 200 fish represent the whole fish pond,

Therefore, 100: x = 20: 200.

The solution is X= 1000.

The quality is average.

100184kg,

200 pieces are 4 16kg, so 100 pieces are 208kg.

Average, (184+208)/2 = 196kg.

1.96kg each.

1000 x 1.96 = 1960kg。

That's all ~