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x = 20.000
jumlah uang = 8x = 160.000
selisih = 40.000
ditanya : jumlah =.......
dijawab : 40.000 = 5x - 3x
40.000 = 2x
40.000/2 = x
20.000 = x
jumlah = (5x20.000) + (3x20.000)
= 100.000 + 60.000
= 160.000