Persons

Persons surveyed:100 with result:

Volleyball=15%
Baseball=9%
Sepak Takraw=8%
Pingpong=8%
Basketball=60%

Find the average how many like Basketball and Volleyball. Please show your solution.

Result

p =  75 %

Solution:

n=100 n1=60100⋅ n=60100⋅ 100=60 n2=15100⋅ n=15100⋅ 100=15  p=100⋅ n1+n2n=100⋅ 60+15100=75=75%n = 100 \ \\ n_{ 1 } = \dfrac{ 60 }{ 100 } \cdot \ n = \dfrac{ 60 }{ 100 } \cdot \ 100 = 60 \ \\ n_{ 2 } = \dfrac{ 15 }{ 100 } \cdot \ n = \dfrac{ 15 }{ 100 } \cdot \ 100 = 15 \ \\ \ \\ p = 100 \cdot \ \dfrac{ n_{ 1 }+n_{ 2 } }{ n } = 100 \cdot \ \dfrac{ 60+15 }{ 100 } = 75 = 75 \%

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