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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