Question

Por favor me ajudem

Answer 1

a)
1-4anos =>1
4-8anos=>2
8-12anos=>3
12-16anos=>4
16-20anos=>5
20-24anos=>6
24-28anos=>7
28-32anos=>8
32-36anos=>9

(1.20+2.15+3.5+4.10+5.5+6.0+7.30+8.10+9.5)/100 = (20+30+15+40+25+210+80+45)/100 = 465/100= 4,65
4.4,65=18,6anos ou entre 16-20anos

b)50%