Question

determinati numerele s,y,z stiind ca sunt direct proporționale cu 0,5;0, (3); si 0,25 si 2x+3y+8z=48

Answer 1

0,5=1/2
0,(3)=3/9=1/3
0,25=1/4

x/2=y/3=z/4=k
x=2k
y=3k
z=4k
4k+9k+32k=48
45k=48 <=>15k=16 =>k=16/15
=>x=32/15
=>y=48/15
=>z=64/15