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5.02 Household bills

Interactive practice questions

The table shows Neville's average water use for one day.

Usage Litres per day
Dishwasher $31$31
Washing Machine $30$30
Gardening $12$12
Toilet $28$28
Shower $53$53
a

How much water is Neville using per day?

b

How much water does Neville use in a week?

c

If Neville only used the washing machine once a week, how much water would he use in a week?

d

What percentage of Neville’s daily water usage is taken up by the washing machine?

Give your answer to the nearest percentage.

e

If water costs $\$2.90$$2.90 per kilolitre, how much would Neville have to pay per day?

Give your answer to the nearest cent.

f

Construct a column graph for his daily water usage.

UsageLitres per day510152025303540455055DishwasherWashing MachineGardeningToiletShower
Medium
6min

A water saving shower head uses $60%$60% of the water an ordinary shower head does.

Easy
3min

Based on the data supplied, if an electricity company charges $\$0.245$$0.245 per kWh, what would a typical household's electricity bill cost for the entire season of Autumn?

Easy
1min

An electricity company charges $\$0.175$$0.175 per kWh.

Easy
2min
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Outcomes

1.1.12

use a calculator appropriately and efficiently for multi-step calculations

1.3.15

use units of energy to describe consumption of electricity, such as kilowatt hours

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