SOLUTION: A beaker contains 30 kilograms of salt water that is 99% water and 1% salt by weight. The water is evaporated until the beaker is 98% water and 2% salt. How many kilograms of salt

Question 981634: A beaker contains 30 kilograms of salt water that is 99% water and 1% salt by weight. The water is evaporated until the beaker is 98% water and 2% salt. How many kilograms of salt water are in the beaker at this time? PLEASE show your work.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
kg of salt in 1% salt solution
Let = the kg of water that is evaporated
away to give a 2% solution
= kg of water in the final solution
= kg of salt in the final solution
----------------------------------------------
There is no salt removed, so the amount you start
with is the amount you end up with

15 kg of water is evaporated

15 kg of salt water is the final solution
------------------------
check answer:
kg of salt in final solution

There is 2% salt in final solution
----------------------------
Another check is:
kg of water to start with
kg of water in final solution
Now add the kg of salt in final solution
kg of final solution
OK

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