Posted by astrid on Tuesday, April 29, 2008 at 4:40pm.
She could add more salt.
Solve this proportion to find how much salt is needed in 350 ml.
250 / 350 = 10 / x
She can't add more salt because she has no more salt.
Oops! Sorry. I didn't read the entire question.
The only other solution I see is to let the excess water evaporate.
So if she lets the water evaporate, she can use the remaining salt to use it in another cip with 250 ml of water
She only needs to let the excess water (100 ml) evaporate.
How can she make sure its 100 ml?
She can note the amount of salt and water in a flask marked in ml.
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