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Definitions
Compound Interest
Compound Interest Word Problems
Continuous Interest
100
The interest rate charged on a principal
What is Rate
100
P = $13,000; R = 4%; N = semiannually; T = 4 years
What is $15,231.57
100
John invested $16,000 at 3% compounded annually for 7 years. Find A.
What is $19,677.98
100

Kimi invest $4,000 at 3% interest compounded continuously. How much money will she have in 4 years?

$4509.99

200
The amount of money invested or borrowed
What is Principal
200
P = $52,500; R = 8%; N = annually; T = 8 years
What is $97,173.84
200
Mary borrowed $450 at 8% compounded semiannually for 3 years. Find A.
What is $569.39
200

Cyndie invests some money at 2% compounded continuously. If after 6 years she has $1,691.25, what was her initial investment?

$1500

300
When money is compounded four times a year
What is Quarterly
300
P = $453,900; R = 12%; N = quarterly; T = 3.5 years
What is $685,203.15
300
Carlos invested $147,000 at 13% compounded monthly for 5.5 years. Find A.
What is $299,342.20
300

Ashleigh put some money into an account paying 4.5% compounded continuously for 10 years. She now has $3,567.91 in the account. How much money did she start the account with? 

$2275

400
Interest + Principal
What is Total or Amount
400
P = $3,927; R = 14%; N = monthly; T = 1.5 years
What is $4,838.77
400
Jeremy borrowed $96,300 at 3% compounded annually for 8 years.
What is $121,989.96
400

Chelsea put $7500 into an account paying 5% compounded continuously. She now has $10,643.01. How long has the money been in the account? Round to the nearest tenth. 

7.1 years

500
When money is compounded two times a year
What is Semiannually
500
P = $64,000; R = 5%; N = quarterly; T = 3 1/4 years
What is $75,216.89
500
Ken invested $372.28 at 7% compounded quarterly for 2 2/3 years. Find A.
What is $447.96
500

Ashleigh wants to double her money. She put $5,000 in a bank account that pays 4% compounded continuously. How long will it take her to double her money? Round to the nearest tenth. 

17.3 years