" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x = 1200
1200 + 70s / 20 + s = 62
kali silang
1200 + 70s = 1240 + 62s
8 s = 40
s = 5
jadi banyak siswa bernilai 70 yg ditambahkan sebanyak 5 orang