Mini-survey 4556

In the mini-survey of our class about the popularity of individual subjects, it was shown that 11.1% of pupils like mathematics, 18.5% like languages, 14.8% of pupils like physical education, and the remaining 12 pupils have several favorite subjects. How many students attend the class?

Correct answer:

n =  21.5827

Step-by-step explanation:


0.111n+0.185n + 0.148n+12=n

0.111·n+0.185·n + 0.148·n+12=n

0.556n = 12


n = 12/0.556 = 21.58273381

n = 3000/139 ≈ 21.582734

Our simple equation calculator calculates it.



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