Question

2intregi si 3/4 cu ponderea 4 . 3 intregi si 4/5 cu ponderea 5. 4 intregi si 5/6 cu ponderea 6

Answer 1

2 intregi si 3/4=2+3/4=11/4
3 intregi si 4/5=3+4/5=19/5
4 intregi si 5/6=4+5/6=29/6
Media ponderata= (11/4*4+19/5*5+29/6*6)/(4+5+6)=(11*4/4+19*5/5+29*6/6)/15=(11+19+29)/15=59/15=3.9(3)