30+ 30,5; +31,26; +32,8; +33,9.= 158,46
158,46:5= 31,692
30,5+31,26+32,8+33,9=128,46
128,46 ÷ 4 = 32, 115
30+ 30,5; +31,26; +32,8; +33,9.= 158,46
158,46:5= 31,692
30,5+31,26+32,8+33,9=128,46
128,46 ÷ 4 = 32, 115