G S Rehill's Interactive Maths Software Series - "Building a Strong Foundation in Mathematics" from mathsteacher.com.au.

Order a 12-month Year 7 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 8 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 9 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 10 Interactive Maths software Homework Licence for only $19.95.

Year 10 Interactive Maths - Second Edition


Percentage Increase

Example 10

The price of a printer increases from $400 to $550. Express this increase as a percentage of the original price.

Solution:


Problem Solving

Example 11

25% of a certain number is 56. Find the number.

Solution:


Example 12

A family spends 20 per cent of its income on mortgage repayments of $145 per week. Calculate the weekly income of the family.

Solution:


Key Terms

percentage increase


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