Thursday

October 23, 2014

October 23, 2014

Posted by **Susannah** on Tuesday, February 21, 2012 at 3:54pm.

- algebra -
**Reiny**, Tuesday, February 21, 2012 at 4:58pmlet the amount of the 20% solution used be x ml

then the amount of the 50% solution used is 300-x m.

solve for x ....

.2x + .5(300-x) = .3(300)

times 10

2x + 5(300-x) = 3(300)

take it from there

- algebra -
**MathGuru**, Tuesday, February 21, 2012 at 5:00pmIt may help to set up a table for these kinds of problems:

............Amount.....%....HCl

Solution 1....x......0.2....0.2x

Solution 2...300-x...0.5....0.5(300-x)

Mixture......300.....0.3....0.3(300)

Equation:

0.2x + 0.5(300-x) = 0.3(300)

Solve for x. (Be sure to list the amount of both solutions!)

I hope this helps.

**Answer this Question**

**Related Questions**

Math - A laboratory has 60 cubic centimeters of a solution that is 40% HCI acid...

algebra - a chemist needs 10 liters of a 25% acid solution. the solution is to ...

math - For a certain experiment, a student requires 100 cubic centimeters of a ...

Chemistry - Captain Kirk, of the Starship Enterprise, has been told by his ...

algebra - An industrial chemist will mix two acid solutions. One is 37% solution...

Algebra - a chemist mixed a 15% glucose solution with a 35% glucose solution. ...

Chemistry - 3.42 grams of Ba(OH)2 is placed in a flask, dissolved in water, and ...

ALGEBRA - A chemist is asked to make 10 liters of a a35% solution. She has only...

Math - A 12% solution and a 24% solution are to be mixed to create 80 mL of a 16...

algebra 2 - A chemist mixes some 20% acid solution with pure 100% acid to ...