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1.02 Percentage increase and decrease

Interactive practice questions

We want to increase $1300$1300 by $40%$40% by following the steps outlined below.

a

First find $40%$40% of $1300$1300.

b

Add the percentage increase to the original amount to find the amount after the increase.

c

Calculate $140%$140% of $1300$1300.

d

Is increasing an amount by $40%$40% equivalent to finding $140%$140% of that amount?

Yes

A

No

B
Easy
2min

By what percentage should a quantity be multiplied with in order to increase it by $17%$17%?

Easy
< 1min

By what percentage should a quantity be multiplied with in order to increase it by $3%$3%?

Easy
< 1min

By what percentage should a quantity be multiplied with in order to increase it by $112%$112%?

Easy
< 1min
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Outcomes

1.1.5

apply percentage increase or decrease in contexts, including determining the impact of inflation on costs and wages over time, calculating percentage mark-ups and discounts, calculating GST, calculating profit or loss in absolute and percentage terms, and calculating simple and compound interest

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