Jawabanmu

2014-02-23T10:25:28+07:00
Jawab : 18000
cara :4500+1500+1500+1500+9000=18000
2014-02-23T10:25:36+07:00
A=3000 ,, b= 4500-3000 = 1500
un = b.n + a-b
u10 = 1500.10 + 3000-1500
       15000 + 1500
       = 16500