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5.11 Credit cards

Worksheet
Credit cards
1

Consider the following monthly credit card statement:

a

What is the opening balance?

b

What is the total of the charges on the credit card for the month?

c

What is the total of the repayments for the month?

d

What is the closing balance for the month?

e

What is the credit limit?

f

What is the available credit?

g

When is the minimum payment due?

h

If the minimum payment due is 24\% of the balance at the end of the statement period, what is the minimum payment due?

i

What is the annual interest rate?

j

What is the daily interest rate to three decimal places? Assume there is 365 days in a year.

2

The table below shows the informations from a monthly credit card statement:

\text{Statement begins}5 \text{ June } 2011
\text{Statement Ends}4 \text{ July } 2011
\text{Account Number}310035012023
\text{Payment due date}\text{4 Aug 2011}
\text{Min payment due}
\text{Overdue}\text{Opening Balance}\text{New Charges}\text{Payments/ Refunds}\text{Closing Balance}
\$0.00\$1742.82
\text{Dat}\text{Transaction Details}\text{Amount (\$)}
\text{8 June}\text{Ecoholidays}855.27
\text{12 June}\text{FashionWear}179.21
\text{13 June}\text{Wages}989.12
\text{17 June}\text{Gifts Online}193.77
\text{19 June}\text{Electricity Austrlia}134.67
\text{24 June}\text{Edgecliff Council}175.46
\text{27 June}\text{Repayments}989.12
\text{3 July}\text{Pizza People}32.45
Credit LimitAnnual RateDaily Rate
\$300016.425\%
a

Find the following, assuming there are 365 days in a year:

i

Opening balance

ii

Total charges for the month.

iii

Total payments for the month.

iv

Closing balance

v

Credit limit

vi

Available credit

vii

Annual interest rate, to three decimal places.

viii

Daily interest rate, to three decimal places.

b

When is the minimum payment due?

c

If the minimum payment due is 18\% of the balance at the end of the statement period, find the minimum payment due.

d

What is the interest due if the balance is paid 21 days after the due date?

3

Explain why interest rates on credit cards are usually higher than those on longer term loans.

4

Calculate the closing balance on a credit card with opening balance \$1553, if purchases to the amount of \$891 and repayments to the amount of \$164 are made during the month. Assume the closing balance is before any interest.

5

The opening balance on a credit card is \$1160, and purchases of \$589 and repayments of \$946 are made during the month.

a

If the credit card company requires a minimum payment of 6\% of the closing balance, find the minimum payment required.

b

If the minimum repayment is made, as well as an annual credit card fee of \$30, what will the total repayment be?

6

A credit card is used to borrow \$800. Calculate the amount owed after 52 days if the interest rate is 5.4\% p.a. compounded daily.

Interest and fees
7

Calculate the interest due on an outstanding credit card balance of \$730 for 11 days if the interest rate is 0.052\% per day.

8

Calculate the interest due on an outstanding credit card balance of \$800 for 21 days if the interest rate is 3\% per annum, compounded daily. Assume that there are 365 days per year.

9

In the past month, Amelia made purchases to the amount of \$364 and repayments to the amount of \$109 on her new credit card, which charges interest at 4\% p.a. compounded monthly.

a

What will be the closing balance before interest?

b

What will be the closing balance after interest?

c

If the credit card company requires a minimum payment of 6\% of the closing balance, what is the minimum payment Amelia will have to pay?

d

If Amelia pays the minimum amount, what is her balance owing?

10

Lucy purchased a \$107 cordless phone with her credit card on 6 January. Her credit card has no interest-free period and interest is charged at 0.066\% per day from the date of purchase. Lucy paid off her purchase and interest charge on 25 January.

a

How many days of interest did she accumulate on her debt?

b

How much did she pay for the cordless phone altogether?

c

How much interest was she charged?

11

Tony bought a wireless adapter, valued at \$136, with his credit card on 6 May. His credit card has no interest-free period and interest is charged at 13\% p.a. from the date of purchase. Tony paid off his purchase and interest charge on 13 June.

a

What was the equivalent daily interest rate charged by his credit card company? Write your answer as a percentage to four decimal places.

b

How much did it cost him to buy the a wireless adapter with his credit card?

c

How much interest did he accumulate?

12

Elizabeth paid \$126 for a dress with her credit card on 20 September. Her credit card has an interest-free period of 55 days and interest is charged at 0.042\% per day. Elizabeth paid off her purchase and interest charge on 15 December.

a

How many days did she accumulate interest on her debt? Assume this credit card charges no interest (if you pay within the interest-free period), or interest for every day since the purchase date (if you pay after the interest-free period).

b

How much did she pay for the dress altogether?

c

How much interest was she charged?

13

Robert bought a set of \$74 earphones with his credit card on 25 March. His credit card has an interest-free period of 55 days and interest is charged at 18\% p.a. Robert paid off his purchase and interest charge on 14 June. How much did he have to pay to clear his debt?

14

Victoria used her credit card to buy a camera, priced at \$2077, on 15 July. Her credit card has an interest-free period of 55 days and interest is charged at 0.049\% per day. Victoria paid off 800 of her debt on 15 August and the remainder on 23 October, 100 days after the date of purchase.

a

How much did she have to pay in total to clear her debt? You may assume that only the balance owing at the end of the interest-free period will accrue interest.

b

How much interest was she charged?

15

For spending above the credit limit, Luigi’s credit card company charges a fee of \$25, plus 0.069\% per day on the amount owing above the limit. The credit limit is \$2401 and Luigi uses his card to pay for a motorbike that costs \$3301. He pays off the cost of the motorbike 11 days after the date of purchase.

a

First find the amount of credit Luigi used above his limit.

b

Find the penalty fee that will be incurred.

16

Lachlan used his credit card to pay for a \$122 drawer on 5 July, a \$23 TV on 10 July, a \$62pair of socks on 13 July and a \$297 pair of glasses on 12 July. His credit card charges interest at 0.036\% per day from the date of purchase. Lachlan paid off his account in full on 25 August.

a

How much did Lachlan pay for the items all together?

b

Lachlan also had to pay a late fee of 5\% of the total repayment due. What is the value of the late fee?

c

How much did Lachlan pay in interest and fees?

17

Xanthe has a credit card that charges 22\% interest p.a. Using the card, she buys a new pair of hiking boots for \$250 on 1 October, a rainproof jacket for \$180 on 20 October and a backpack for \$75 on 25 November. She pays off her credit card on 10 December. The card has a 30 day interest-free period that is forfeited completely if the balance is not repaid before it.

How much interest will Xanthe accrue for these purchases?

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MS2-12-5

makes informed decisions about financial situations, including annuities and loan repayments

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