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→Additional Information
=Additional Information=
=Additional Information=
This videos is related to ratio and proportion
This videos is related to ratio and proportion and also profit and loss percentage
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{{#widget:YouTube|id=D8dA4pE5hEY}} {{#widget:YouTube|id=54RlVr2d1Tc}}
==Useful websites==
==Useful websites==
# To see the best videos on ratio and proporsion[https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/v/introduction-to-ratios-new-hd-version click here]
# To see the best videos on ratio and proporsion[https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/v/introduction-to-ratios-new-hd-version click here]