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NSW Y12 Maths Standard 1 NSW Y12 Maths Standard 2 NSW Y12 Maths Advanced NSW Y12 Maths Extension 1 NSW Y12 Maths Extension 2

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Rates and Ratios Networks Investments and Loans Non-Right Angled Trigonometry Simultaneous Equations Bivariant Data Analysis Annuities Non-Linear Relationships Normal Distribution Critical Path Analysis

NSW Y12 Maths - Standard 2 Rates and Ratios Rates and Concentrations

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Rates and Concentrations Theory

A rate is a comparison of amounts with different units.\\ Examples are: running rate, metres per second, wage rate, money earned per hour, speed, kilometres per hour, cost of chemical, cost per volume.\\ \textbf{Example}\\ A hippopotamus can run at 30 km/h. Its speed in metres/second is?\\ \textbf{Solution}\\ $\begin{aligned} \frac{30 \text{ km}}{\text{1 hour}}&=\frac{30\times 1000~\text{m}}{60\times 60~\text{ secs}}\\ &=8.3~\text{m/sec} \end{aligned}$\\

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Videos

Videos relating to Rates and Concentrations.

  • Rates and Concentrations - Video - Rates and Concentrations

  • Rates and Concentrations - Video - How To Convert From Km/hr to m/s and m/s to Km/hr - With Shortcut!

  • Rates and Concentrations - Video - Rates

  • Rates and Concentrations - Video - Rates 3

  • Rates and Concentrations - Video - Rates 2

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