Răspunsuri

2014-11-05T18:25:08+02:00
F=nr fete
b=nr baieti
f+b=33
b=f+20/100*f
b=f+f/5
b=6f/5
f+6f/5=33
11f/5=33
11f=33*5
11f=165
f=165:11
f=15
b=33-15
b=18
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