Question

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

(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? [4 MARKS]

Answer 1

Concept: 1 Mark
Application: 1 Mark each

(i) Let the total number of young people surveyed be x

$10\%ofx=20$

$\frac{10}{100}\times x=20$

$x=200$

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

(iii) Number of CD’s for different music

Semi Classical
$=1000\times 20\%=200$

Classical
$=1000\times 10\%=100$

Folk
$=1000\times 30\%=300$

Light
$=1000\times 40\%=400$