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Byk kendaraan roda 4 = y
x + y = 65
2x + 4y = 170
2 (x + 2y) = 170
2 (x + y + y) = 170
2(65 + y) = 170
65 + y= 85
y = 20 x + y = 65
x + 20 = 65
x = 45
45 . 2000 + 20 . 5000 =
90000 + 100000 =
Rp 190000 =
2a + 4b = 170
= 2a + 2b = 130
2a + 4b = 170
_______________ _
2b = 40
b = 20
* a+b = 65
a = 65-20 = 45
yang diterima tukang parkir yaitu
roda 2 = 45 x 2000 = 90.000
roda 4 = 20 x 5000 = 100000
yang diterima yaitu rp. 190.000