jawaban benarnya 31
Penjelasan dengan langkah-langkah:
diket:
jml. soal = 50
yg dijawab = 40
ga dijawab = 50 - 40 = 10
nilai benar = 4
nilai salah = -2
nilai ga dijawab = -1
jml. nilai siswa = 96
misal jawaban benar = x
maka, jawaban salah = 40 - x
nilai siswa = 96
(4 × jwb. benar) + (-2 × jwb. salah) + (-1 × ga dijawab) = 96
[4 . x] + [-2 . (40-x)] + [-1 . 10] = 96
4x + (-80 + 2x) - 10 = 96
6x - 90 = 96
6x = 186
x = 31
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jawaban benarnya 31
Penjelasan dengan langkah-langkah:
diket:
jml. soal = 50
yg dijawab = 40
ga dijawab = 50 - 40 = 10
nilai benar = 4
nilai salah = -2
nilai ga dijawab = -1
jml. nilai siswa = 96
misal jawaban benar = x
maka, jawaban salah = 40 - x
nilai siswa = 96
(4 × jwb. benar) + (-2 × jwb. salah) + (-1 × ga dijawab) = 96
[4 . x] + [-2 . (40-x)] + [-1 . 10] = 96
4x + (-80 + 2x) - 10 = 96
6x - 90 = 96
6x = 186
x = 31