Percentages are used in every day life to state progress, ratio of quantities, probability etc. When we say we have done 50% of the work we mean that 1/2 of the work has been completed. Let's do a couple of examples to understand this better!
8437_Percent_of_a_whole_number.html
8442_Percent_word_problem_guavas.html
8443_Percent_word_problem_penguins.html
8439_Percent_word_problem_100_is_what_percent_of_80_.html
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