Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

Login

Username

Password

Not registered yet?

#1 2008-01-28 10:03:47

44halfj
Novice

Offline

Solution Problem

How do you set this one up?

If you have an unknown amount of 30% solution and an unknown amount of 70 % solution, how much of each doyou need to make 12L of 45 % solution?

 

#2 2008-01-28 12:16:14

JaneFairfax
Legendary Member

Offline

Re: Solution Problem

If you mix V litres of the first solution and W litres of the second solution, the concentration of your resulting solution will be



You want



and



So just solve the two simultaneous equations in V and W for your answer. smile


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.
 

Board footer

Powered by FluxBB