Question

Prin trei robinete curg in 4 ore 10800 litri de apa.Câti litri de apa curg prin 5 robinete de acelasi tip in 3 ore???(REGULA DE TREI SIMPLA)

Answer 1

3rob......4ore.......10800l

5rob.....4ore........x??

x=(5*10800)/3=54000/3=18000l (in 4 ore)

5rob........4ore......18000l

5rob.......3ore.......y???

y=(3*18000)/4=13500l

Answer 2

problema se rezolva prin regula de trei compusa pe care o impartim in doua reguli de trei simpla

prima data vom afla cati litri de apa curg prin 5 robinete in 4 ore

3r.......................10800l

5r.............................xl

x=10800*5/3=18000l

iar acum vom afla cata apa curge prin 5 robinetein 3 ore

4ore.................18000l

3ore......................xl

x=18000*3/4=13500l