A sells a radio to B at a loss of 20%, B sells it to C at a loss of 30% and C sells it to D at a loss of 10%. If A pays ₹ 2000, then the Cost Price for D is :
A sells radio to B at a loss of 20%, B sells it to C at a loss of 30% and C sells it to D at a loss of 10%. If A pays ₹ 2000, then the Cost Price for D is :