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Pelajaran :MatematikaKelas :7
Bab :5
Nama Bab :Perbandingan dan Aritmatika Sosial
Kode mapel:2
Kode :7.2.5
Jawab:
misal tabungan awal dea=x
bunga=2×5%×x
=10%x
RP 3.850.000,-=x+10%x
RP 3.850.000,-=110/100x
x=RP 3.850.000,-/110/100
x=RP 3.850.000,-×100/110
x=RP 3.500.000,-
Jadi tabungan awal dea adalah RP 3.500.000,-