Question

Va rog foarte repede ! Capitolul : Sir de rapoarte egale Problema este: a supra 9 = b supra 11 = c supra 14 -> a+b+c=680 a=? b=? c=? alta x supra 3 = x supra 11 = z supra 5 --> 3x+y+5z=300 x=? y=? z=?

Answer 1

a/9=b/11=c/14=(a+b+c)/(9+11+14)=680/34=20
=>a=9x20=180
=>b=11x20=220
=>c=14x20=280

x/3=y/11=z/5=k
x=3k
y=11k
z=5k
9k+11k+25k=300
45k=300 =>k=20/3
=>x=20
=>y=220/3
=>z=100/3