## A species of beetles grows 32% every year. Suppose 100 beetles are released into a field. How many beetles will there be in 10 years?

Question

A species of beetles grows 32% every year. Suppose 100 beetles are released into a field. How many beetles will there be in 10 years?
A species of beetles grows 32% every year. Suppose 100 beetles are released into a field.
How many beetles will there be in 20 years? A species of beetles grows 32% every year. Suppose 100 beetles are released into a field.
About when will there be 100,000 beetles?

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1. Given that a species of beetles grows 32% every year.

So growth rate is given by

r=32%= 0.32

Given that 100 beetles are released into a field.

So that means initial number of beetles P=100

Now we have to find about how many beetles will there be in 10 years.

To find that we need to setup growth formula which is given by

where A is number of beetles at any year n.

Plug the given values into above formula we get:

now plug n=10 years

Hence answer is approx 1606 beetles will be there after 20 years.

Now we have to find about how many beetles will there be in 20 years.

To find that we plug n=20 years

Hence answer is approx 25791 beetles will be there after 20 years.

Now we have to find time for 100000 beetles so plug A=100000

33.174666862=n

Hence answer is approx 33 years.