SOLUTION: how much 2% acid must be mixed with 10% acid to obtain 4000 ml of 4% acid

Question 782624: how much 2% acid must be mixed with 10% acid to obtain 4000 ml of 4% acid
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ml of 2% acid needed
Let = ml of 10% acid needed
= ml of acid in 2% acid
= ml of acid in 10% acid
------------------------------------
(1)
(2)
---------------------------------------
(2)
(2)
(2)
(2)
Subtract (1) from (2)
(2)
(1)

and, since
(1)
(1)
3000 ml of 2% acid is needed
1000 ml of 10% acid is needed
check:
(2)
(2)
(2)
(2)
(2)
OK

RELATED QUESTIONS
How much 2% acid must be mixed with 10% acid to obtain 2,000 ml of 8%... (answered by jerryguo41)

How much 2% acid must be mixed with 10% acid to get 500 ml of 5%... (answered by Fombitz)

How much 5% acid must be mixed with 25% acid to obtain 500 ml of 7%... (answered by stanbon)

How much 15% acid must be mixed with 21% acid to obtain 70mL of 18%... (answered by ikleyn)

15 ml of 25% acid solution must be mixed with how much 30% acid to yield a 27% acid... (answered by stanbon)

How much 2% acid must be added to 12% acid to get 50 ml of 10% acid? (answered by richwmiller)

how much 20% acid must be mixed with 5% acid to make 30mL of 12%... (answered by josgarithmetic)

How much 20% hydrochloric acid must be mixed with 40 mL of 8% acid to form the 12% acid... (answered by prince_abubu)

How much of a 50% acid solution must be mixed with 8 gallons of a 22% acid solution to... (answered by checkley77)