SOLUTION: You need a 50% alcohol solution. On hand, you have a 100 mL of a 30% alcohol mixture. You also have 75% alcohol mixture. How much of the 75% mixture will you need to add to obtain

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Question 1162816: You need a 50% alcohol solution. On hand, you have a 100 mL of a 30% alcohol mixture. You also have 75% alcohol mixture. How much of the 75% mixture will you need to add to obtain the desired solution?
You will need _______ mL of the 75% solution?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
0.3%2A100%2B0.75x=0.5%28x%2B100%29, to account for pure alcohol.
Solve for x.

Answer by ikleyn(52798) About Me  (Show Source):
You can put this solution on YOUR website!
.

Hello,

your post is formatted in such a way, that I start thinking that you are not interested to learn the solution

(and even are not going to see or read it), but only interested to get the number (the answer) to input it to the system.


Please write me if my understanding is correct.


If not, if you do not want to produce such an impression, then please format your post accordingly.