Dora the Explorer is borrowing $600 from Diego to go on an adventure. Diego agrees to the loan if she repays the money at the end of the nine months. However, Diego will charge her 3%
annual simple interest.

How much will Dora have to pay Diego at the end of the nine months?

Hey there! I'm happy to help!

Annual simple interest is basically taking the certain percent of an initial amount and adding that same number and over and over again each year.

So, we want to see how much she will have to pay at the end of nine months. However, 3% of her $600 is after 12 months. 9 is 3/4 of 12. So, we need to find what percent is 3/4 0f 3%. 3/4 is the same thing as 75%.

75% × 3%= 2.25%

Now, we need to find 2.25% of 600.

2.25% × 600=13.5

Now, we add this to our initial 600.

613.5

Therefore, Dora will have to pay Diego $613.50 at the end of nine months.

I hope that this helps! Have a wonderful day!