# $3,000 is invested in an account paying 4% interest and twice that amount is invested at 6%. How do you write the expression that represents the amount of interest earned on the money invested at 6%?

##### 1 Answer

Aug 1, 2018

#### Answer:

See explanation

#### Explanation:

Assumption: The interest given is the

Twice the amount is

Let the count of years be

Factoring out the

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The 6% is 'spread' over each calculation cycle. There are 12 months in a year so instead of

Note that the count in years is