Question

The population of fish in a lake doubles every decade.

In 1980, the population was 3,000 fish.
What was the population of the pond after 4 decades?
Population = ____

Answer 1

After 4 decades, the population of fishes in the pond becomes 48,000 fishes

Explanation:

We are told to find the population of fishes in a pond after 4 decades given that the population of the pond doubles after each decade.

A decade is a period of 10 years

For the first decade, the population becomes 3,000 * 2 = 6,000 fishes

For the second decade, the population becomes 6,000 * 2 = 12,000 fishes

For the third decade, the population becomes 12,000 * 2 = 24,000 fishes

and lastly for the fourth decade, the population becomes 24,000 * 2 = 48,000 fishes