Q. 965.0( 1 Vote )

# In a survey, 200

Given:

Number of students = 200

Formula Used\Theory:

Multiplying of ratio of each part and total value gives out

Value of each part

(a) The number of students influenced by radio is =

Ratio × total number of students

= × 200

= 9 × 10

= 90students

(b) Number of students influence more by radio than music video channel

= difference of ratio × number of students

= () × 200

= () × 200

=

= 37 × 2

= 74 students

(c) Number of students influence by friends and relatives

= Ratio × total number of students

= × 200

= 3 × 10

= 30

Number of students heard CD in a shop = Ratio × total number of students

= × 200

= 20 students

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