Question

Ionut Victor si Stefan au depus la banca sume de banii direct proportionale cu numerele 3,4 respectiv 5 .
Aflati cati lei au depus fiecare stiind ca au depus in total 600 lei.
Va rog ajutati-ma e urgent!!

Answer 1

$\frac{x}{3}= \frac{y}{4} = \frac{z}{5} =k$
x=3k
y=4k
z=5k
3k+4k+5k=600
12k=600
k=600 : 12
k= 50
x= 3 x 50= 150
y= 4 x 50 = 200
z = 5 x 50 = 250
150 + 200 + 250 = 600