A survey was made to find the type of music that a certain group of young people liked in a city

A survey was made to find the type of music that a certain group of young people liked in a city. Following pie chart shows the findings of this survey.
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From this pie chart answer the following:
(i) If 20 people liked classical music, how many young people were surveyed?
(ii) Which type of music is liked by the maximum number of people?
(iii) If a cassette company were to make 1000 CD’s, how many of each type would they make?

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