Simple Interest
Compound Interest
Compound Interest
Simply formula
Conversions
100

What is the simple interest for $34,000 at 4% p.a. for 3 years?

$4,080.00

100

What is the total balance with a principal of $1,240 at 8% p.a. compounded annually for 2 years?

$1,446.34

100

What is the interest earned with a principal of $1,500 at 7% p.a. compounded annually for 3 years?

$337.56

100

For the formula

        I = PRN

What does I represent?

Interest

100

If the interest rate is 13% pa, what is the monthly interest rate?

1.08%

200

What is the simple interest for $210 at 8% p.a. for 7 years?

$117.60

200

What is the total balance with a principal of $1,030 at 4% p.a. compounded annually for 2 years?

$1,114.05

200

What is the interest earned with a principal of $7,300 at 7% p.a. compounded annually for 3 years?

$1,9642.81

200

For the formula

        I = PRN

What does R represent?

Interest rate expressed as a decimal

200

If the interest rate is 8% pa, what is the quarterly interest rate?

2%

300

What is the total balance for $4,000 at 3% p.a. for 4 years?

$4,480.00

300

What is the total balance with a principal of $12,700 at 8.8% p.a. compounded annually for 1 year?

$13,817.60

300

What is the interest earned on an $18,000 deposit at 9% p.a. compounded annually for 6 years?

$12,187.80

300

For the formula

        I = PRN

What does N represent?

Number of time periods

300

If money is invested for 3 years and the interest is compounded monthly, how many time periods are there?

36

400

What is the total balance for $20,600 at 8% p.a. for 24 months?

$23,896.00

400

Jasmine deposits $520 into a savings account that has a 3.5% p.a. interest rate compounded monthly. What will be the balance of Jasmine’s savings account after two years?


$557.65

400

An investment earns 3% p.a. each year and is compounded monthly. Calculate the total interest after 6 years from an initial investment of $5,000.


$984.74

400

For the formula

        A = P(1+r)n

What does A represent?

Total amount including interest (balance)

400

If money is invested for 5 years and the interest is compounded fortnightly, how many time periods are there?

130

500

What is the total balance for $14,000 at 6% p.a. for 108 months?

$21,560.00

500

Lex invested $1,780.80 in his savings account 6 years ago. His account has an annual interest rate of 6.8% p.a. compounded quarterly. How much is in his account today?


$2,667.61

500

What is the interest of a $21,000 deposit at 13.6% p.a. compounded fortnightly for 4 years?

$15,014.48

500

`How doe we find out the interest earned in an investment earning compound interest?

I = A - P

500

If money is invested for 6 years and the interest is 7.8% compounded monthly, what is the value of "r" and "n"?

Interest rate = 0.6%, r = 0.0065

n = 72