MathsComparing QuantitiesRatiosRatio – Introduction

Ratio – Introduction

Table of Contents

  • Ratio
  • Summary
  • Did You Know?
  • What’s Next?

In the previous segment, we had looked at Cube and Cube roots. In this segment of the

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    chapter ‘Comparing Quantities’, we will learn about Ratios.

    What is Ratio?

    A Ratio is a comparison of quantities. It says how much of one thing there is compared to another thing. It can only be used to compare things of the same type.

    The ratio of two quantities a and b can be written as ? or a : b (read as a is to b).

    ?

    For example,

    If Bhavya has 3 cats and 2 dogs, then the ratio of the number of cats to the number of dogs is 3 : 2. Similarly, the ratio of the number of dogs to the number of cats is 2 : 3.

    Summary

    Ratio

    • Comparison of quantities.
    • Only used to compare things of the same type.
    • The ratio of two quantities a and b can be written as ?or a : b

    ?

    Did you know?

    The development of ratio and proportion theory was conducted by the Pythagoreans.

    What’s next?

    In our next segment of Class 08 Maths, we shall look at the percentage.

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