Question

impartiti numarul 69in parti direc proportionale cu numerele 5,7 si11

Answer 1

x,y,z d.p cu 5,7,11⇒ $\frac{x}{5} = \frac{y}{7} = \frac{z}{11} = k$

x+y+z = 69 ⇒ 5k + 7k + 11k = 69 ⇒ 23k = 69 ⇒ k = 69:3 ⇒ k = 3

x=5k ⇒ x=15
y=7k ⇒ y=21
z=11k ⇒ z=33