Question

Gasiti numerele x,y,z, invers proportionele cu numerele 4,5,6, suma lor fiind 1725

Answer 1

4x=5y=6z=k
x=k/4      y=k/5           z=k/6

x+y+z=    k/4+k/5+k/6=1725 aducem la acelasi numitor

15k+12k+10k=1725x60
37k=103 500

Asa ar trebui sa se rezolve, dar ceva nu e in ordine, ma gandesc si revin.Poate iti dai tu seama

Answer 2

x=1/4
y=1/5
z=1/6
fie k coeficient de proportionalitate
x=1/4k y=1/5k z=1/6k
1/4k+1/5k+1/6k=1725
37/60k=1725
k=1725:37/60
k=2797 11/37
(in continuare se inmultesc si se afla numerele)