Question

A survey was made the type of music that a certain group of N people liked in a city. Adjoining pie chart shows the findings of this survey
30% folk music
40% light music
20% semi classical music
10% classical music
If 20 people liked classical music. How many young people surveyed?
No. of people who like classical music-20
% of people who liked classical music-10%
100=10
?=20
100×20/10=200

Calculate- find the no. of people who like semi classical music, folk music & light music..
all the best​

Answer 1

Answer:

1. Let x be the number of young people surveyed.

∴ 10% of x = 20

⇒ \frac { 10 }{ 100 }  x x = 20

⇒ x = 20 x 10 = 200

Step-by-step explanation:

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Answer 2

Answer:

$\huge\underbrace\mathcal\red{Answer}$

i) let the people surveyed = x

Classical music = 10% of x

10% of x. = 20

10 × x / 100 = 20

x. = 2000/10

x = 200

ii) light

iii) Total CD's 1000

Light = 40% of 1000

= 40 × 1000 / 100

= 400

Folk = 30% of 1000 = 300

Semi Classical. = 200

Classical. = 100