Jumlah nilai 31 murid = 71 x 31 = 2201
Jumlah nilai 31 murid + sanusi = 71,5 x 32 = 2288
Nilai sanusi = 2288 - 2201 = 87
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= ( 71,5 x 32 ) - ( 71 x 31 )
= 2.288 - 2.201
= 87
Jadi, Nilai Sanusi adalah 87
Jumlah nilai 31 murid = 71 x 31 = 2201
Jumlah nilai 31 murid + sanusi = 71,5 x 32 = 2288
Nilai sanusi = 2288 - 2201 = 87