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Cel mai inteligent răspuns!
2014-02-06T01:53:00+02:00
Luam prima parte: X*0.12*60/360=x*12/100*60/360=(36x/5)/360 ;A doua (x*60/100*72)/360=(216x/5)/360;a treia:(x*9/100*120)/360=(54x/5)/360 ==>[(36x+216x+30x)/5]/360=(306/5)/360=306/1800=0.17

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