A survey was made to find the type of music
that a certain group of 200 young people liked in Classical- 10%
a city. Adjoining pie chart shows the findings Light- 40%
of this survey. Semi classical- 20%
If a cassette company were to make Folk- 30%
1000 CD’s, how many of each type
would they make?
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Answer:
(i) 10% represents 100 people.
Therefore 20% represents = \frac{100\times20}{10}
10
100×20
= 200 people
Hence, 200 people were surveyed.
(ii) Light music is liked by the maximum number of people.
(iii) CD’s of classical music = \frac{10\times1000}{100}
100
10×1000
= 100
CD’s of semi-classical music = \frac{20\times1000}{100}
100
20×1000
= 200
CD’s of light music = \frac{40\times1000}{100}=400
100
40×1000
=400
CD’s of folk music = \frac{30\times1000}{100}=300
100
30×1000
=300
Step-by-step explanation:
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