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  • 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.

 

1. 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:

(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?

Answers (1)

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(i)Let x be the total number of people. If 20 people liked classical music, then 10% of x =\frac{10}{100} \times x = 20

Total number of people x  = (100\times 20)\div 10 = 200 people.

(ii)  Maximum number of people like light music i.e.40 \%.

(iii) If a cassette company were to make 1000 CD’s, then

     Light music CD's = \frac{40}{100} \times 1000 = 400

     Folk music CD's = \frac{30}{100} \times 1000 = 300

     Classical music CD's = \frac{10}{100} \times 1000 = 100

     Semi classical music CD's = \frac{20}{100} \times 1000 = 200

 

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