Question

560 L
how to get 13% solution if you add both x and y together
there is 32% x chemical
22% y chemical

can any1 explain how to do these types of problems?

Answer 1

:)

Answer 2

Ok, i'm not sure i get the question. A 13% solution of x+y in something else like water so that the total is 560l? What do the 32% and 22% of x and y refer to?

Answer 3

okies you want to get 13% from a 560 sol when x + y

Answer 4

x % of a solution
y % percent of a solution

Answer 5

who cares what it is
so i just called it x and y

Answer 6

it was made up but in imitation (plugged in different values)

i just wanted to know how to do these types of problems

Answer 7

I want to make sure I understand the question properly so I don't give wrong advice ;)
So to rephrase, you've got a 32% solution of x, a 22% solution of y. You add the two together - how many liters of the x and y solutions and how many liters of water do you need to get 560l of a 13% solution of xy?
I'm a bit dense tonight... been a long day ;)

Answer 8

ummm . O.o?

ya its what you said

Answer 9

So we're trying to find out how many liters of x and y we need
I *think* it's like this:

0.32x + 0.22y = 0.13

Solve for x, substitute, solve for y, you get the idea, to get the relative amounts (factors of each x and y), then multiply each by 560 to get the number of liters needed.

I'm not completely sure that's it, Someone double check?

Answer 10

wow :D

Answer 11

Basically, 1 liter of a 22% solution of x is 0.22l of x, and the rest for example water. So we know we need to get the two factors and add them together (that's what the assignment says), and we just need to figure out how to turn that int a 13% solution - which is what equating it to 0.13 does.

Answer 12

o okies
then i do the same with y right?

Answer 13

If you wanted to find for each chemical separately - but since the two added together need to form a 13% solution, we need to equate the sum of the two solutions to 0.13, as in the equation i put up there.

Answer 14

ya they both equate to make a 13% sol of 560

Answer 15

Precisely. But the equation only deals with the *relative* amounts. So after solving it for both x and and y, you'll have to multiply by 560 to get the actual number in l.

Answer 16

okies okies

ty vm

:D

Answer 17

whats up sis long time no see.

Answer 18

o hehe

Answer 19

talk in chat ?

Answer 20

best way to do these type of problems is set up system of 2 equations

Volume: x +y = 560
Solution: .32x +.22y = 560(.13)