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b:c = 3:4
a:b:c = 15:9:12
a-c = 3 = Rp 1.500
b = 9/3 × Rp 1.500 = Rp 4.500,-
semoga membantu:)
b:c=3:4
sekarang menentukan perbandingan
ali=5x3=15
beni=3x3=9
candra=3x4= 12
rumunta= ditanyakan/diketahui x soal
= 9/3 x rp 1.500
= rp 45.000