Jawabanmu

2014-05-03T19:07:28+07:00
M = mobil
s = sepeda motor
4m + 2s = 300
m + s = 105 | x2 ( menyamakan variabel )
-------------------- -
4m + 2s = 300
2m + 2s = 210
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2m = 90
m = 45
Jumlah Mobil = 45 buah
m + s = 105
45 + s = 105
s = 105 - 45
sepeda  = 60 buah
perolehan = 45 x 5.000 + 60 x 2.000
225.000 + 120.000
= 345.000