A few days ago
Anonymous

Maths problem?

Help! Can you please help me with this maths prob?

€6,500 was invested for 3 years at compound interest. The interest rate for the first year was 5%, for the second year was 8% and for the third year it was 12%. Calculate the the total interest earned.

Can you please show me how you did this aswell?

Top 2 Answers
A few days ago
Smooch The Pooch

Favorite Answer

325.00 first year

546.00 second year

884.52 third year

for a total of 1755.52

How you calculate:

You invest 6500.00, the interest is 5%.

6500.00 x .05 = 325.00 add the 325.00 to this, bringing you to 6825.00

Then calculate 8% on this total, 6825.00 x .08= 546.00, again add this to total. 7371.00

Calculate 7371.00 x 12%= 884.52

bringing your total to 1755.52

1

A few days ago
Maverick
Since nobody have given you the following information, I will. The formula for simple Interest that you need to MEMORIZE is:

Interest = Principal * Rate * Time

Principal is the amount that you have invested

Rate is the percent that you are getting. HOWEVER, YOU MUST CHANGE THE PERCENT TO A DECIMAL.

(to change percent to decimal, move decimal point two places to the left! 12% = .12, 8% = .08, etc.

Time is the length of time that money is invested, given in YEARS. In your case, all are 1 year so it is a 1, if you were to invest for 6 months, then it would be 1/2.

Now, simply do the multiplication and get your answer for each year, then add the years together.

Hope this helps and now you can do more problems in the future!!!!

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