5. Rates - StudyNinja

HSC Standard Maths Resources

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5. Rates

Questions related to rates and ratios appear frequently in the exam. Check out the overview section for relevant importance of this section compared to other topics in this course. In 2020 exam, four questions appeared from this topic making up 13 marks (2020Q32020Q172020Q23, 2020Q27). This section covers the following parts of the syllabus:

MS-M4 Rates

 MS-M7 Rates and Ratios

Basics of this topic are easy to understand and mostly are common sense where you either need to determine rates or ratios from given information or you may need to answer questions using given rates/ratios you. The ways these questions get complicated are when they are asked as part of a scenario where there are inter-dependent layers of information and you need to untangle one layer at a time to get to the ultimate answer the question is asking for. Advice here would be to focus on learning the skills of breaking complicated questions down into smaller sections and tackling them individually.

The infographic below shows all the past exam questions from 2010 to 2020 relevant to this topic sorted by difficulty levels and further broken down into sub-topics. This will form the foundation of our study as we would like you to focus first on the easy questions and quickly develop skills to get those easy marks and then challenge yourself with the harder ones.

There are two sub-sections you need to focus:

5.1 Rates

5.2 Ratios


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