Question

A soma de 3 números sao 380 calcule sabendo que sao inversamente proporcional a 2.5.4

Answer 1

180,160 e 40 a soma de 3 números

Answer 2

x+y+z=380. 1/2+1/5+1/4 =10+4+5/20=19/20
x/1/2=y/1/5=z/1/4

380: 19/20=x:1/2.
380.1/2=19/20x
190=19/20x
19x=3800
x=3800/19
x= 200

380:19/20=y:1/5
380.1/5=19/20y
76=19/20y
19y=1520
y= 1520/19
y= 80

380.1/4= 19/20z
95=19/20z
19z=1900
z= 1900/19
z= 100