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

 

Year 9 Interactive Maths - Second Edition


Chapter 11 Ratio and Proportion

Ratio and proportion are used in concentration of solutions, drug dosages, debt versus capital finance, similar figures, and mechanical advantage.   Similar figures are widely used in the building industry, and knowledge of ratio and proportion is essential to understand the concept of similar figures.

Ratios
Finding the Ratio of Two Quantities
Dividing a Quantity in a Given Ratio
Proportion
Symbols
Index

 

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