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4
j.n 4 org = 60 x 4 =240
70 = j.n 5 org
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5
j.n 5 org = 70 x 5 = 350
nilai siswa ke-5 = 350-240 = 110
semoga benar
: 4 x 60 = 240
jumlah rata" nilai 4 orang + nilai orang ke 5
= 240 + 70
= 310
nilai rata" 5 orang :
=jumlah nilai 5 orang / jumlah orang
= 310 / 5
= 62