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va rog day coroana plus inima​

Va Rog Day Coroana Plus Inima class=

Răspuns :

Răspuns:

Explicație pas cu pas:

x/2=y/3=z/5=k  inseamna ca x,y,z direct proportionale cu 2,3,5

x=2k

y=3k

z=5k

x+y=5k

y+z=8k

5k= p/100*8k

5=(p/100)*8

p= 62,5

Răspuns:

[tex](x,y,z)d.p.(2,3,5)\\\\x/2=y/3=z/5=k\\\\x=2k\\\\y=3k\\\\z=5k\\\\x+y=p/100*(y+z)\\\\100*(x+y)=p*(y+z)\\\\100*(2k+3k)=p*(3k+5k)\\\\500k=p*8k\\\\p=500k/8k= > p=62,5[/tex]