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Hi, friends, we will start now with a new module which is based on bar diagram. It is most common type of diagram which is used in practice. They are called the one dimensional because only the length of the bar matters but not the width […]
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Hi, in this session will be learning about successive percentages now what really is a successive percentage it is percentage on percentage didn’t understands ok let’s do that with this example A scores 10% more than B, while B scores 20% more than C . By […]
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Hi, in this session will be learning about alligation now what really is alligation well alligation is a method of finding the ratio in which two or more ingredients should be mixed in order to make a mixture of a desired proportion so we’re mixing two […]
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Hello, now let’s look at the concept of percentage A is 25% taller than B this is what we have done in the previous video correct but now the statement is 25% taller than B by what percentage is B shorter than A so let’s see […]
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Hello today we look at percentage increase and decrease what do you mean by this statements A is 25% taller, sales of the company decreased by 15%, X scored 30%, Y scored 20% does these statement makes any meaning no why because the comparison is missing […]
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Hi, in this session we are going to look at other methods of computing means you’re already aware of arithmetic mean which is simple average and also weighted average Now there are other methods of computing mean apart from these two let us look at what […]
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Hi this seesion is about Arithmetic mean or simple average what really is arithmetic mean to understand this we need to look at the monthly rainfall figures of Colombo in the year 2012 this is the graph which depicts the monthly rainfall figures in 2012 right […]
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Hi, in this session we will be doing the concept of Proportionality of Speed and also Average
Speed. What really is speed, well, a vehicle which covers a certain distance in certain
amount of time, well, it would have covered this distance in some time, it would have
travelled in some […]
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Hello everyone, today we are going to start with the session called Partnership and
Mixtures. Both of these topics are Applications of Ratio and Proportion.
So, let’s first begin with Partnership and considering A, B and C, starts a business with an
investment of 16 lakhs, 12 lakhs and […]
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Hello everyone, let’s start with the next session of ratio and proportion, which is Direct and
Inverse Variation.
The first one is Direct Variation. In direct variation what happens. If I consider X and Y are
two parameters, Y increases then X also increases. If Y decreases then X also decreases. […]
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