Pure Milk contains 89% water.How much water should be added to form a sample of 22 litre containing 90% water?

• a sample of 22 litre containing 90% water will have 10% milk i.e. 2.2 ltr milk.
  
  2.2 ltr milk in a mixture of 11% milk means total mixture is 100*2.2/11= 20 ltr.,
  
  so 2 ltr water should be added in 20 ltr mixture of 89% water to make it 22 ltr mixture having 90% water.
• 12 years agoHelpfull: Yes(36) No(7)
• ans 22,(litres of water in 1st mixture for 22 litre=1958,in second case it 1980..so 22 litres of water added)
• 12 years agoHelpfull: Yes(4) No(6)
• 89 100
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  90
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  /
  10 1 = 10:1 => 10x=22 litre
  x=2.2 litre ans
• 8 years agoHelpfull: Yes(2) No(0)
• let the 100 liters be intial value
  so water is 89 litrs 11 is milk content
  let x liters to be added to the solution then
  89+x/100+x=19.8
  fafter this go with x=2 for option verfication
  
• 8 years agoHelpfull: Yes(2) No(0)