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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 8 Interactive Maths - Second Edition


Using a Ratio to Solve Problems

If the ratio of two quantities is known and one of the quantities is given, then the other quantity can be calculated.


Example 10

A company wants to reduce its operating cost in the ratio 2 : 3.
If the operating cost was $51000 last year, what would be its target cost?

Solution:

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