SOLUTION: joan has one solution that is 18% acid and
second solution that is 43% acid.How many
liters should she mix together in order to get
an 80 liters solution that is 26.5% acid
Algebra ->
Percentage-and-ratio-word-problems
-> SOLUTION: joan has one solution that is 18% acid and
second solution that is 43% acid.How many
liters should she mix together in order to get
an 80 liters solution that is 26.5% acid
Log On
Question 1043926: joan has one solution that is 18% acid and
second solution that is 43% acid.How many
liters should she mix together in order to get
an 80 liters solution that is 26.5% acid Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = liters of 18% solution needed
Let = liters of 43% solution needed
----------------------------------- = liters of acid in 18% solution = liters of acid in 43% solution
-----------------------------------
(1)
(2)
-----------------------------------
(2)
(2)
(2)
---------------------------
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
--------------------------
and
(1)
(1)
----------------------
52.8 liters of 18% solution are needed
27.2 liters of 43% solution are needed
--------------------------------
check answer:
(2)
(2)
(2)
(2)
(2)
(2)
OK
