# If tuition at a college is increasing by each year, how many years will it take 6.6% for tuition to double?

##### 1 Answer

Jan 22, 2017

It will take

#### Explanation:

Let current tuition rate be

Then we need the condition

Using the same model as for compound interest but setting final value after n years as

Divide both sides by

Note that

Taking logs of both sides

Note that