Ascientist has two solutions, which she has labeled solution a and solution b. each contains salt. she knows that solution a is 40% salt and solution b is 65% salt. she wants to obtain 110 ounces of a mixture that is 55% salt. how many ounces of each solution should she use?

There are 44 ounces of Solution A and 66 ounces of Solution B.

Step-by-step explanation:

Since we have given that

Percentage of salt in solution A = 40%

Percentage of salt in solution B = 65%

Percentage of salt in mixture = 55%

Total ounces of a mixture = 110 ounces

We will use "Mixture and Allegation ":

          Solution A                       Solution B

               40%                                  65%

                                     55%

-----------------------------------------------------------------------------

   65% - 55%                 :                 55% - 40%

          10%                     :                  15%

           2                        :                   3

So, the ratio of solution A to solution B is 2:3.

So, the number of ounces of solution A she should use is given by

Number of ounces of solution B she should use is given by

Hence, there are 44 ounces of Solution A and 66 ounces of Solution B.

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.