Mini-survey

In the mini-survey of our class about the popularity of individual subjects, it turned out that 11.1% of pupils like mathematics, 18.5% are enjoying languages, 30.4% of pupils like physical education, and the remaining 12 pupils have several popular subjects. How many students are visiting our class?

Result

n =  30

Solution:

 0.111n+0.185n+0.304n+12=n  0.4n=12  n=30 =30 \ \\ 0.111n + 0.185n + 0.304n + 12=n \ \\ \ \\ 0.4n=12 \ \\ \ \\ n=30 \ \\ =30



Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





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