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2014-01-12T16:30:27+02:00
A+b=280
a=2/5xb
2/5xb+b=280
3b/5=280
3b=280:5
3b=56
b=56:3
b=18,6
a+18,6=280    a=280-18,6 a= 261,4

Sper sa fie bine! :o3
2014-01-12T16:32:16+02:00
A+b=280
a=(2/5)*b
(2/5)*b+b=280  =>  2b+5b=1400  =>7b=1400 =>b=200

a=(2/5)*200 => a=400/5=80

a=80
b=200
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