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Verified answer
Jual =Rp.180rugi = 10% = 10%*180 = Rp.18
Beli =Jual- rugi = 180 -18 =Rp.162
Verified answer
Penjualan (p) = Rp 180,00rugi = 10 %
pembelian (b) = ...???
rugi = b - p
.................b - p
% rugi = -------- × 100%
....................b
..............b - 180
10 % = ----------- × 100 %
.................b
.............100b - 18.000
10 % = ---------------------
...................100b
10/100 × 100b = 100b - 18.000
10b = 100b - 18.000
100b - 10b = 18.000
90b = 18.000
b = 18.000/90
b = Rp 200,00
Jadi pembeliannya adalah Rp 200,00