Question

Printr-un robinet curg intr-un bazin 12 l de apa pe secunda .In cat timp vor umple 6 robinete acelasi bazin al catul volum este de 3000 l

Answer 1

Cata apa de la 6 robinete ?
12*6=72 l/s
In cat timp vor umple 6 robinete ?
3000 : 72 = 41,(6) secunde

Answer 2

1r.......1s.........12l
1r........x.........3000l
x=1*3000/12
x=3000/12
x=250 s
1r....250s.....3000l
6r.....y...3000l
y=1*250/6
y=250/6
y=41, 6 s