SOLUTION: a solution contains 8% salt. How much water should be added to 70 ounces of this solution to make a 2.5% solution?

Question 1054478: a solution contains 8% salt. How much water should be added to 70 ounces of this solution to make a 2.5% solution?
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
.
a solution contains 8% salt. How much water should be added to 70 ounces of this solution to make a 2.5% solution?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Let w = the volume of water to add, in ounces.

Then the balance equation for salt is

0.08*70 = 0.025*(70+w).

Solve for w and get the answer.

There is entire bunch of the lessons covering various types of mixture problems
    - Mixture problems
    - More Mixture problems
    - Solving typical word problems on mixtures for solutions
    - Word problems on mixtures for antifreeze solutions
    - Word problems on mixtures for alloys
    - Typical word problems on mixtures from the archive
in this site.

Read them and become an expert in solution the mixture word problems.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook in the section "Word problems" under the topic "Mixture problems".

The textbook contains many other solved word problems, as well as many other interesting and useful things.

RELATED QUESTIONS
a solution contains 5% salt. How much water should be added to 70 ounces of this solution (answered by josgarithmetic,ikleyn)

A solution contains 7% salt. How much water should be added to 70 ounces of this solution (answered by ankor@dixie-net.com)

how much water should be added to 48 ounces of 8% salt solution to make a 3% salt... (answered by ewatrrr)

How much water should be added to 64 ounces of a 10% salt solution to make a 2% salt... (answered by Fombitz)

How much water should be added to 64 ounces of 10% salt solution to make a 2% salt... (answered by stanbon)

A solution contains 3% salt. How much water should be added to 20 ounces of this solution (answered by nerdybill)

A solution contains 6% salt. How much water should be added to 30 ounces of this... (answered by KMST)

a solution contains 5% salt. How much water should be added to 20ml of the solution to... (answered by sudhanshu_kmr)

a solution contains 6 % salt. How much water should be added to 90 ounces of the... (answered by checkley79)