...Beauty, cleaning, DIY tips and more - free to join!
   Login   Contact us   Site map   Puzzle Club   Ask a question    Newsletter

A 12 litre solution contains 100/3% acid.how much water is to be added to reduce acid to 20%?


Question asked by: b.akila

Asked on: 20 May 2010

12 litres is 33% acid and you want to reduce it down to 20% being acid.

So 0 litres is 100% acid.

Therefore adding 12 litres reduces acid by 67%.

So each litre reduces by 67/12 = 5.58% Therefore to reduce by another 13% we need another 2 1/3 litres of water.

By: knowitall
Replied at: 23 May 2010
Rate Answer
Comment or provide your answer to this question

Comments and other answers:

Suppose, we have to add x liter water to get 20% acid solution. Now, we know, V1*S1=V2*S2 Hence, 12*100/3=(12+x)*20 or, x=8 Therefore, we have to add 8 liter water.
By: psahu63

Date of comment: Fri, Sep 3rd 2010

Ask a New Question

Find out more about Maths

Maths Questions and Answers

algebra Questions and Answers

Next question: SHAPE FORMED BY JOINING 2 CONES


Become a Member! It's Free >>>

Share on Facebook: On Twitter: TwitterTweet this!

Question Keywords

added  reduce  acid  litre  solution  contains  acidhow  

More Questions:

Find The Next Number
What Number Is 378 More Than 1756
Currency Calculation
A Piece Of Wire 80cm Long Is Cut Into 2 Parts. Each Part Is Bent To Form A Square. If The Total Area Of The Two Squares Is 272cm2, Find The Length Of Longer Wire.
Needing A Little Help How Do I Solve 8p - 1 = 23