60 = 4 siswa.
70 = 3 siswa
80 = x
90= 7siswa
100 = 6 siswa
x= 28 - ( 4+3+7+6 siswa)
=28-20siswa = 8 siswa
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60 = 4 siswa.
70 = 3 siswa
80 = x
90= 7siswa
100 = 6 siswa
x= 28 - ( 4+3+7+6 siswa)
=28-20siswa = 8 siswa