If a 10 lit. mixture contains milk and water in the ratio 2:1 then, how much more mixture should be added to change the ratio to 1:2 ?

• If you add the same mixture again,the ratio will still remain the same.
  The question should be how much water to be added
  
  
  In 10 litres, let quantity of milk = 2x and quantity of water = x
  => 2x + x = 10
  => x = 10/3 , 2x = 20/3
  
  Let y litres of water be added to make the ratio 1:2
  => (20/3) / (10/3 + y) = 1 / 2
  => 40/3 = 10/3 + y
  => y = 10 liters
  
  Therefore,10 liters of water to be added.
• 10 years agoHelpfull: Yes(49) No(5)
• quantity of milk=10*2/3=20/3
  quantity of water=10*1/3=10/3
  new ratio=1:2
  milk:water=(20/3+x)/(10/3+x)=1/2
  40+6x=10+3x
  30=3X
  x=10
• 10 years agoHelpfull: Yes(20) No(3)
• unable to understand,can any body explain clearly,as if u explains newly kistening to this concept ???
  plz plz plz
  
• 9 years agoHelpfull: Yes(4) No(0)
• 2:1 ratio clearly shows 6.66 lit of milk and 3.33 lit of water. To be a 1:2 ratio milk is kept constant and the water is to be double of milk content which is 13.32 litres in that we already have a 3.33 litres so remaining 10 litres should be added
• 9 years agoHelpfull: Yes(3) No(1)
• In 10 litres, let quantity of milk = 2x and quantity of water = x
  => 2x + x = 10
  => x = 10/3 , 2x = 20/3
  
  Let y litres of water be added to make the ratio 1:2
  => (20/3) / (10/3 + y) = 1 / 2
  => 40/3 = 10/3 + y
  => y = 10 liters
• 9 years agoHelpfull: Yes(2) No(0)
• Two mixtures are initially in the ratio p:q,then after adding some mixture we get new ratio a:b.Total quantity=x
  Formulae to find the quantity of mixture to be added(quant)=(x(pb-qa))/(a(p+q))
  quant=(10(4-1))/(1(3))=10
  Ans:10 litres
• 7 years agoHelpfull: Yes(2) No(1)