ibu membeli motor dengan cara diangsur 4 kali, angsuran pertamadibayar 1/3 dari harga motor angsuran kedua dibayar 1/2 bagian dari sisa angsuran pertama, angsu

angsuran 1 = 1/3 harga motor
angsuran 2 = 1/2 sisa angsuran 1
angsuran 3 = 2/3 sisa angsuran 1 dan angsuran 2
angsuran 4 = 500.000

misalkan harga motor = m
angsuran 1 = 1/3 m, sisa nya = 2/3 m
angsuran 2 = 1/2 x 2/3 m = 2/6 m sisanya = 1 - (1/3 + 2/6 ) = 1 - (2/6 + 2/6) = 6/6 - 4/6 = 2/6 m
angsuran 3 = 2/3 x 2/6 = 4/18 = 2/9
sisanya = 1 - (1/3 + 2/6 + 2/9) = 1 - (6/18 + 6/18 + 4/18) = 18/18 - 16/18 = 2/18 = 1/9
1/9 m = 500.000 , m = 9/1 × 500.000 = 4.500.000
harga awal motor yg dibeli ibu = 4.500.000