Question

Impartiti nr 400 in parti direct proportionale cu 5 , 8 ,7 si nr 800 in parti direct proportionale cu 4,15,21 . REPEDE VA ROG !!

Answer 1

{5,8,7} d.p {x;y;z}
x+y+z=400
x/5=y/8=z/7=>x+y+z/5+8+7=>400/20=20

x/5=20=>x=5x20=100
y/8=20=>y=8x20=160
z/7=20=>z=7x20=140

Si la celalalt faci la fel.