In a mixture of milk and water 270 l, there is milk and water in ratio 7:5. How much water is added to get ratio 9:5 finally.

• 7+5=270
  1P=22.5
  milk:water=157.5:112.5
  157.5/17.5=9
  because we have to mix water not milk s5
  o milk is constant here
  similarly
  17.5*5=87.5
  ans=87.5
• 8 years agoHelpfull: Yes(1) No(2)
• total mixture 270
  milk = 270/12*7=157.5
  water 270/12*5=112.5
  
  now new ratio is 9:5
  and we can not add milk so we add water and ratio is water is to milk =9:5
  so the 157.5/5*9=283.5
  but there is water availabel is 112.5
  so 283.5-112.5=171
  so 171 liter of water is added to make ration 9:5
  cross check
  
  initial milk 157.5
  initial water 112.5
  added water 171
  new water become
  283.5
  adn 283.5/157.5 and divided by 31.5 upper and lower we get 9:5
  
• 8 years agoHelpfull: Yes(0) No(0)