in what proportion water to be mixed with spirit to gain 12.5% by selling it at cost price?

• If 1000 ml of spirit purchased for Rs 1000 is sold at cost price for making profit of 12.5% after mixing water , then
  SP of mixture having 1000 ml of spirit = Rs 1125
  when SP of mixture and CP of pure spirit are same, then
  1125 ml of mixture contains 125 ml of water.
  ratio of water and spirit = 125/1000 = 1/8
  
  so 1 ltr of water should be mixed with 8 ltr of spirit to get a mixture of 9 ltrs to sell mixture at CP to get profit of 12.5%.
• 11 years agoHelpfull: Yes(24) No(3)
• Ans 1/8
  If the total quantity=100
  Actual quantity of spirit to be sold to get 12.5% gain=100*100/112.5=800/9
  So the water =100-(800/9)=100/9
  Proportion of water:spirit =100/9 : 800/9= 1:8
  
• 11 years agoHelpfull: Yes(4) No(1)
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• 11 years agoHelpfull: Yes(3) No(6)
• Let cost price=x
  
  Selling price=1.125x
  
  Price of water=0.125x
  
  Ratio=x:125x =0.125x/x=1/8=1:8
• 5 years agoHelpfull: Yes(0) No(0)