SOLUTION: Brass is made from r parts of copper to s parts of zinc. Determine amt. of copper needed for m lbs. of brass. Not sure how to solve.

Question 1198496: Brass is made from r parts of copper to s parts of zinc. Determine amt. of copper needed for m lbs. of brass.
Not sure how to solve.

Answer by ikleyn(52802) (Show Source): You can put this solution on YOUR website!
.


According to the condition, 1 pound of brass contains    pounds of copper.


It is what the problem says, expressed in other words.


Then  "m"  lbs of brass contain (plural)   pounds of copper.    ANSWER

Solved, with explanations.

=================

comment from student :   How did you obtain    lbs. ?

My response :   As the problem says, one pound of brass is (r + s) equal masses, where "r" is the number of parts of copper.

                        It IMMEDIATELY means that 1 pound of brass contains      pounds of copper.

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