Rita borrows $5000 from her parents. she repays them $6000. what is the interest rate if she pays at the end of year 2

Rita borrowed 5 000 dollars from her parents.

Now, she paid 6 000 dollars after 2 years.

how much interest did she paid?

Let x be the value of interest that she paid

=> 5000 = x * 6000

=> 5000 = 6000x

=> Now, divide each sides with 6000

=> 5000 / 6000 = 6000x / 6000

=> 0.8 = x

=> 0.8 / 100

= 80 %

100% - 80%

=> 20 %, thus, Rita paid 20% to his parent.