Question

A survey was made to find the type of music that a certain group of young people liked in a city. Adjoining pie chart shows the findings of this survey.

From this pie chart answer the following: 

1. If 20 people liked classical music, how many young people were surveyed? 
2. Which type of music is liked by the maximum number of people? 
3. If a cassette company were to make 1000 CD’s, how many of each type would they make?

Answer 1

(i) \(10\) %  represents \(20\) people.
Therefore \(100\) % represents = \(\frac{100 × 20 }{10}\)
= \(200\) people
Hence, \(200\) people were surveyed.

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(ii) Light music is liked by the maximum number of people.

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(iii) CD’s of classical music = \(\frac{10 × 1000}{100}\)
= \(100\)
CD’s of semi-classical music = \(\frac{20 × 1000}{100}\) 
= \(200\)

CD’s of light music = \(\frac{40 × 1000}{100}\) 
= \(400\)

CD’s of folk music = \(\frac{30 × 1000}{100}\) 
= \(300\)