9.,cangkeh membetuk sudut siku siku
yg artinya:1/4 x 100%
,artinya coklat 20%
20/100x40 ton
=8 ton
,teh 15%
15/100x 40 ton
600/100
=6 ton
10.rata- rata=(6*2)+(7*5)+(8*7)+(9*3)+(10*3)/20
=12+35+56+27+30/20
=160/20
rata-rata =8
jadi,banyak siswa yg memperoleh nilai diatas rata rata. 7+3+3
=13 siswa
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9.,cangkeh membetuk sudut siku siku
yg artinya:1/4 x 100%
,artinya coklat 20%
20/100x40 ton
=8 ton
,teh 15%
15/100x 40 ton
600/100
=6 ton
10.rata- rata=(6*2)+(7*5)+(8*7)+(9*3)+(10*3)/20
=12+35+56+27+30/20
=160/20
rata-rata =8
jadi,banyak siswa yg memperoleh nilai diatas rata rata. 7+3+3
=13 siswa