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b = 3p
2b = 6p
2b + 5p = 5.500
6p + 5p = 5.500
11p = 5.500
p = 5.500 / 11
p = Rp 500,-
harga 4 pensil = 4 * 5.00
= Rp 2.000,-
pensil = p
1b = 3p
2b + 5p = 5.500
2.(3p) + 5p = 5.500
6p + 5p = 5.500
11p = 5.500
p = 500
harga 4 pensil = 4.(500)
= 2.000