Question

A, (In a survey of a group of a people, it was
found that 70%of the people liked folk songs, 60%
liked modern songs and 4000 people liked both of
them. If 10% liked none of them then,) find the total number of people in survey... find the number of people who like folk songs only​

Answer 1

Answer:

Total people in survey = 10000

Number of people who like folk song only = 3000

Step-by-step explanation:

10% like none, thus 90% like atleast anyone of them.

Let the total number of people in survey be x.

90x/100 = 70x/100 + 60x/100 - 4000

40x/100 = 4000

x = 400000/40

x = 10000

Total number if people who like folk songs = 70*10000/100

= 7000

Number of people who like folk song only = 7000 - 4000

= 3000