SOLUTION: What quantity of 70% acid solution must be mixed with a 30 solution to produce 960 mL of a 50% solution?
Please help me!
Algebra.Com
Question 906376: What quantity of 70% acid solution must be mixed with a 30 solution to produce 960 mL of a 50% solution?
Please help me!
Found 2 solutions by Alan3354, richwmiller:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
50 is the average of 70 and 30 --> equal amounts
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
The other tutor Alan is correct. He knows some neat shortcuts.
Here is the proof.
a+b=960,
0.7*a+0.3*b=0.5*960
a=960-b
0.7*(960-b)+0.3*b=480
672-0.7b+0.3*b=480
-0.4*b=-192
b=480
a=960-b
a=480 mL at 0.7% b=480 mL at 0.3%
check
0.7*480+0.3*480=0.5*960
336+144=480
480=480
ok
RELATED QUESTIONS
What quantity of 70 per cent acid solution must be mixed with a 30 solution to produce... (answered by oberobic)
What quantity of 70 per cent acid solution must be mixed with a 30 solution to produce... (answered by mananth)
What quantity of 60 percent acid solution must be mixed with a 30 percent solution to... (answered by richwmiller)
What quantity of a 70% acid solution must be mixed with a 50% solution to produce 200 mL... (answered by josgarithmetic)
What quantity of 70 per cent acid solution must be mixed with a 20 percent solution to... (answered by checkley77)
What quantity of 70 percent acid solution must be mixed with a 20 percent solution to... (answered by robertb)
What quantity of a 70% acid solution must be mixed with a 30% solution to produce 400 mL... (answered by Alan3354)
What quantity of 70 per cent acid solution must be mixed with a 15 percent solution... (answered by ankor@dixie-net.com,checkley79)
What quantity of 60% acid solution must be mixed with 30% acid solution to produce 300mL... (answered by Earlsdon)