Question

how much salt must be added to 60 liters of a

how much salt must be added to 60 liters of a 20% solution of salt to increase in to a 40% solution of salt.​

Answer 1

Answer:

Add s liter of 100% salt.

s + 60 = total liters

100s + 60*20 = (s + 60)*40 (total salt)

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100s + 1200 = 40s + 2400

60s = 1200

s = 20 liters

Step-by-step explanation:

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Answer 2

Answer:

original amount of salt in 20% of 60 liters = 12 litre

amount required =40% of solution =24 litre

amount to be added = 12 litre.