tinggi = rataan x jumlah
= 150 x 12
= 1.800
= 154 x 14 (tinggi baru)
= 2.156
selisih = 2.156 - 1.800
= 356
tinggi 2 siswa baru = 356 cm
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Penyelesaian
tinggi = rataan x jumlah
= 150 x 12
= 1.800
= 154 x 14 (tinggi baru)
= 2.156
selisih = 2.156 - 1.800
= 356
tinggi 2 siswa baru = 356 cm