Question

How much salt must be added to 60 litres of a 20% solution of salt to increase it to 40% solution of salt
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Answer 1

Answer:

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Answer 2

Answer:

20 litres of salt

Step-by-step explanation:

In 20% salt solution of 60 litres will contain

salt = 20*60/100=12 litres and remaining 48 litres will be water.

let x litres will be added to 60 litres to make it 40% salt solution.

Now the solution becomes (60+x) litres

salt quantity will become (12+x)litres

now

12+x = 40*(60+x)/100

12+x = 24 + .4x

.6x = 12

x = 20

total salt becomes 32 litres.

total solution becomes 80 litres.