Marinada '21

[lang=hr] Nebeska sveta krava Milica mudro krije svoju dob. Kad su je pitali koliko godina ima, odgovorila je: "Ako mom broju godina oduzmeš $13$, rezultat podijeliš s $2$, zatim mu dodaš $4$ pa dobiveni broj podijeliš s $3$, nakon toga pomnožiš s $2$ te zatim oduzmeš $17$ i dodaš $30$, dobit ćeš broj $169$." Koliko nebeska sveta krava Milica ima godina? [/lang] [lang=en] Henrietta the Holy Cow doesn't reveal hear age easily. When someone asked, she replied: "If you deduct $13$ from my age, then divide the result by $2$, then add $4$ and divide that result by $3$, then multiply the obtained number by $2$, then subtract $17$ and add $30$, you will get the number $169$." How old is Henrietta the Holy Cow? [/lang]