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.

Correct result:

p =  75 %

Solution:

$$\begin{gathered} n=100 \\ {n}_1={\displaystyle \frac{60}{100}}\cdot n={\displaystyle \frac{60}{100}}\cdot 100=60 \\ {n}_2={\displaystyle \frac{15}{100}}\cdot n={\displaystyle \frac{15}{100}}\cdot 100=15 \\ p=100\cdot {\displaystyle \frac{n_1+n_2}{n}}=100\cdot {\displaystyle \frac{60+15}{100}}=75\mathrm{\%} \end{gathered}$$

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