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misalkan koper = x, dan tas = y
2 koper dan 5 tas adalah Rp.600.000 => 2x + 5y = 600.000
3 koper dan 2 tas yang sama Rp.570.000 => 3x + 2y = 570.000
2x + 5y = 600.000
3x + 2y = 570.000
_______________ _
4x + 10y = 1.200.000
15x + 10y = 2.850.000
__________________ _
-11x = -1.650.000
x = 150.000
2x + 5y = 600.000
2 (150.000) + 5y = 600.000
300.000 + 5y = 600.000
5y = 300.000
y = 60.000
1 koper dan 2 tas
x + 2y
150.000 + 2 (60.000)
150.000 + 120.000
270.000
Jadi, harga 1 koper dan 2 tas adalah Rp270.000,00