Dawnie deposited $350 in a savings account earning 2% interest over 3 years.

what was the total amount of interest earned at the end of 3 years?

a.
$420

b.
$210

c.
$42

d.
$21

Solutions 
.
Dawnie deposited $350 in a savings account earning 2% interest over 3 years.

To solve the problem we have to use the formula I= Principal × Rate × Time (year). 

⇒ Given 

$350 in a savings account  

2% interest over 3 years

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Let principal amount = $350.00

Let interest rate, 2% per year, or in decimal form, 2/100=0.02. 

Let time involved, 3 year(s) time periods. 

Calculations 

To get the interest rate you have to multiply 

350 × 0.02 × 3
                                   
The interest is: $21.00 

Answer = (D)