sea water contains 5% salt by weight how many kilograms of fresh water must be added to 40 kg of sea water for the salt content of the solution to be 2%

• 40 kg sea water contains 2 kg salt and 38 kg pure fresh water.
  60 kilograms of fresh water must be added to 40 kg of sea water for the salt content of the solution to be 2% as there will be 2 kg salt in 100 kg water now.
• 11 years agoHelpfull: Yes(3) No(1)
• 5% salt by weight means 2 kgs out of 40 kgs is salt.
  Let x be the total amount of mixture
  Therefore, 2% of x = 2 → x = 100 kg
  So the amount of fresh water to be added in the mixture is 100 – 40 = 60 kg
• 9 years agoHelpfull: Yes(0) No(1)
• we have 5% salt by weight means in 100 kg of water it have 5 kg salt .
  we know fresh water is free of salt
  40*5=2*x
  x=100
  the water added in it is 60 kg
• 9 years agoHelpfull: Yes(0) No(1)
• 60
  Question
• 8 years agoHelpfull: Yes(0) No(1)