SOLUTION: i was tought this but i forgot sooo: how many grams of salt must be added to 30 grams of a 20% salt solution to obtain a 25% salt solution?

Question 212521: i was tought this but i forgot sooo: how many grams of salt must be added to 30 grams of a 20% salt solution to obtain a 25% salt solution?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
how many grams of salt must be added to 30 grams of a 20% salt solution to obtain a 25% salt solution?
----------------------------------------------
Equation:
salt + salt = salt
0.20*30 + x = 0.25(30+x)
Multiply thru by 100 to get:
600 + 100x = 25*30 + 25x
75x = 150
x = 2 grams (amt. of salt that must be added to the mixture)
================================================================
Cheers,
Stan H.
RELATED QUESTIONS
A chemist has 400g of salt solution that is 10% salt. How many grams of 20% salt... (answered by jorel1380)

Please help me solve this problem. How many grams of salt must be added to 40 grams of a... (answered by checkley77)

bunson beaker has 150 grams of a 50% salt solution. how many grams of water must be added (answered by josgarithmetic)

How many grams of salt must be added to 80 grams of a 22% salt solution to obtain a 40%... (answered by checkley77)

How many grams of salt must be added to 40 grams of a 28% salt solution to obtain a 40%... (answered by josgarithmetic)

HOW MANY GRAMS OF PURE SALT MUST BE ADDED TO 40 GRAMS OF A 20% SALT SOLUTION TO MAKE A... (answered by longjonsilver)

How many grams of pure salt must be added to 40 grams of a 20% salt solution to make a... (answered by stanbon)

How many grams of salt must be added to 90 grams of a 20% salt solution to make a 25%... (answered by stanbon)

How many grams of salt must be added to 90 grams of a 20% salt solution to make a 25%... (answered by josgarithmetic)