Kelley Coles
02/15/2023 · Middle School

\( \begin{array}{ll}\text { 27. U nekoj školi } 55 \% \text { svih učenika su djevojčice. } & \text { od n } \\ \text { Ostalo su djecaci i nijh je za } 60 \text { manje nego dje- } & \text { da n } \\ \text { vojčica. Koliko je uçenika u toj školi? }\end{array} \)

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Neka je \( n \) ukupan broj učenika u školi. Prema zadatku, 55% svih učenika su djevojčice, što znači da je broj djevojčica: \[ 0.55n \] Ostatak učenika su dječaci, a to je: \[ n - 0.55n = 0.45n \] Prema zadatku, broj dječaka je 60 manje od broja djevojčica. To možemo zapisati kao: \[ 0.45n = 0.55n - 60 \] Sada možemo riješiti ovu jednadžbu. Prvo, prebacimo sve članove koji sadrže \( n \) na jednu stranu: \[ 0.45n + 60 = 0.55n \] Sada oduzmemo \( 0.45n \) s obe strane: \[ 60 = 0.55n - 0.45n \] Što pojednostavljuje na: \[ 60 = 0.10n \] Sada možemo riješiti za \( n \): \[ n = \frac{60}{0.10} = 600 \] Dakle, ukupan broj učenika u školi je \( \boxed{600} \).

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The total number of students in the school is 600.
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