Răspuns :
a/b=2/3=>3a=2b=>a=2b/3
3b/5+3a/10=(a+b)-1560
3b/5+6b/30=2b/3+b-1560
18b+6b=20b+30b-46800
26b=46800 =>b=1800 lei
a=2x1800/3=1200 lei
3b/5+3a/10=(a+b)-1560
3b/5+6b/30=2b/3+b-1560
18b+6b=20b+30b-46800
26b=46800 =>b=1800 lei
a=2x1800/3=1200 lei
x/y = 2/3 y = 3x/2
3y/5 + 3x/10 = x+ y - 1560
6y + 3x = 10x + 10y - 15600 7x + 4y = 15600
7x + 6x = 15600 13x = 15600 x = 1200 lei y = 1800 lei
3y/5 + 3x/10 = x+ y - 1560
6y + 3x = 10x + 10y - 15600 7x + 4y = 15600
7x + 6x = 15600 13x = 15600 x = 1200 lei y = 1800 lei