Răspunsuri

2014-03-30T11:46:33+03:00
La proportii produsul mezilor=produsul extremilor => 4x=6y si x+y=60
x=60-y  =>  4(60-y)=6y
240-4y=6y
10y=240 =>  y=24 si x=36
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2014-03-30T12:00:44+03:00
X/6=y/4=k    x=6k   b=4k     a+b=60  inlocuim si avem;    6k+4k=60    10k=60 =>k=6    x=6*6  =>x=36     b=4k    b=4*6   =>b=24   facem proba     36+24=60