berarti
skor soal isian singkat punya dia =
(1 x 8) + (4 x 0) = 8 + 0 = 8
skor akhir = 53, berarti. skor pilihan ganda dia = 53 - 8 = 45..
anggap aja x = jumlah soal bnr, y =jmlah soal salah
x + y = 20 --> 3x + 3y = 60
3x - 2y = 45 --> 3x - 2y = 45
------------------------------------- -
5y = 15
y = 3
x + y = 20
x + 3 = 20
x = 17
nah berarti
jumlah soal benar = 17
jumlah soal salah = 3
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berarti
skor soal isian singkat punya dia =
(1 x 8) + (4 x 0) = 8 + 0 = 8
skor akhir = 53, berarti. skor pilihan ganda dia = 53 - 8 = 45..
anggap aja x = jumlah soal bnr, y =jmlah soal salah
x + y = 20 --> 3x + 3y = 60
3x - 2y = 45 --> 3x - 2y = 45
------------------------------------- -
5y = 15
y = 3
x + y = 20
x + 3 = 20
x = 17
nah berarti
jumlah soal benar = 17
jumlah soal salah = 3