Ravi sells a washing machine for rupees 13,500 she loss 20% in the baegain what was the price at which he bought it
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Let the s.p=100
Loss=20℅on s.p
=20/100×100
=20
C.p=s.p+loss
=100+20
=120
When s.p=100 , c.p=120
When s.p=1 ,c.p=120
When s.p= 13500,c.p=120/100×13500=16200=c.p
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