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Increasing / decreasing a quantity by a percentage

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Increasing / decreasing a quantity by a percentage

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Increasing / decreasing a quantity by a percentage

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I now work through a quick method to increase or decrease a quantity by a percentage. Examples

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You will need to be able to calculate a percentage change such as a percentage profit / loss or percentage increase / decrease. This video shows you how.

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Next, I move on to show you how to convert a fraction to a percentage. Again this is a common task in working with percentages.

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I now show you how to find a percentage of a quantity which is a common task in working with percentages.

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This is the first video in this series where I introduce you to what we mean by a percentage.

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In this next section I start to work with equations that are fractions. I first start with some basic ones consisting of two terms, one of which is a fraction.

I continue to look at fractional equations consisting of one term which is a fraction but in the denominator of that fraction there are two terms.

Examples in the video

Solve the following:

In this next video I now look at fractional equations consisting of at least 3 terms where one of them is a fraction.

I now look at fractional equations consisting of at least 2 terms which are fractions.

Examples in the video

Solve the following:

This is the last in this series where I now look at fractional equations where x appears in the denominator of both fractions.

Examples in the video

Solve the following:

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In this next section I start to work with equations that are fractions. I first start with some basic ones consisting of two terms, one of which is a fraction.

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I now start to extend the work covered so far by looking at equations with brackets. In my second example in the video, care must be taken. Very easy to trip up. Summary Exercise

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This is the first in a series of videos to help you to start solving linear equations. Before you start make sure that you are familiar with what we mean by a term. Summary Exercise

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When working with expressions and equations it is important to be able to recognise what a term is. Check out the video if you are not sure or take the quick summary exercise.

Summary Exercise

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When working with expressions and equations it is important to be able to recognise what a term is. Check out the video if you are not sure or take the quick summary exercise. Summary Exercise

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Introduction to algebra learn and practice 

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Introduction to algebra learn and practice 

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Introduction to algebra | Algebra (all content) | Math | Khan Academy

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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

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Ratio and Proportion video lessons and Quizzes 

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Ratio and Proportion video lessons and Quizzes 

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Ratio and proportion review | Class 6 (India) | Math | Khan Academy

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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.