If A has Rs 9000 with him.After spending x%, he gives the ramaining amount to B. B ,after spending x%, of the amount with him, gives the remaining amount to C.If C spends x% of the amount with him and left with the Rs 1944. Find the value of x?

• x= 40%
  
  9000*(1-x)^3= 1944
  (1-x)^3= 1944/9000 = 27/125
  
  1-x= 3/5
  5-5x=3
  5x= 2
  x= 2/5
  
  so x is 40%.
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