Wednesday

April 23, 2014

April 23, 2014

Posted by **Monica** on Friday, July 5, 2013 at 6:05pm.

- math -
**Kuai**, Friday, July 5, 2013 at 6:50pm0.8x + 0.3(90-x) = .5(90)

.8x + 27 -.3x = 45

.5x +27 = 45

.5x + 27 - 27 = 45-27

.5x = 18

x = 36

36 at 80%

54 at 30%

- math -
**Monica**, Friday, July 5, 2013 at 7:31pmKuai, you are awesome!!! Thank you very much! I really appreciate it!

**Related Questions**

math - How much pure acid should be mixed with 3 gallons of a 50% acid solution ...

math - A chemist has 30%, 40 % and 80 % acid solutions. All three were to be ...

math - 60 ml of solution A is mixed with 120 ml of solution B to produce ...

Math - A chemistry teacher needs 2.5 liters of a sulfuric acid solution that is ...

Algebra - Suppose a 2% acid solution is mixed with a 3% acid solution. Find the ...

Algebra - Suppose a 2% acid solution is mixed with a 3% acid solution. Find the ...

chemistry - Solutions of sulfuric acid and lead acetate react to form solid ...

math - How many gallons of 5% acid solution should be mixed with 20 galllons of...

chemistry - A 10% acid solution is to be mixed with a 50% acid solution in order...

Math - a pharmacist has a 40% acid solution and has a 25% acid solution. How ...