Question

Suna numerelor x+y+z=1440, știind că x/3=y/4=z/5 x? Y=? Z=?

Answer 1

Salut !

$\frac{x}{3} = \frac{y}{4} = \frac{z}{5} = > x = 3k;y = 4k;z = 5k$

$x + y + z = 1440$

$3k + 4k + 5k = 1440$

$12k = 1440$

$k = 1440:12$

$k = 120$

$x = 120 \times 3 = 360$

$y = 120 \times 4 = 480$

$z = 120 \times 5 = 600$

$600 + 480 + 360 = 1440$

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