Simple Interest (HSC SSCE Mathematics Standard): Quizzes

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Simple Interest
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What is the key feature of simple interest?

It's a fixed % of the original amount

Which formula is used to calculate simple interest?

I=PrnI = Prn

How do you convert 9% to a decimal for use in the simple interest formula?

Divide by 100 to get 0.09

Calculate interest on 5,000 USD at 8% p.a. for 3 years using I=PrnI = Prn.

1,200 USD

What fraction of a year is 1 month when calculating simple interest?

112\frac{1}{12}

How many fortnights are there in a year?

26

If I=900I = 900, r=0.06r = 0.06, and n=5n = 5, find PP using P=IrnP = \frac{I}{rn}.

3,000

What formula finds the total amount owed after simple interest is added?

A=P+IA = P + I

How do you calculate loan repayment for a total of 10,400 USD over 52 payments?

10,400 ÷ 52 = 200 USD

What shape is a simple interest graph?

A straight line

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