SOLUTION: One week, Mr. Slade promised to pay his son Joel $5 for each algebra problem he solved correctly. However, he would charge Joel $2 for each incorrect solution. At the end of the we
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Question 669852: One week, Mr. Slade promised to pay his son Joel $5 for each algebra problem he solved correctly. However, he would charge Joel $2 for each incorrect solution. At the end of the week Joel had completed 82 problems. Mr. Slade owes Joel $25. How many problems did Joel solve correctly.
I started by doing this but I cannot get an even number answer(C=Correct, I=Incorrect)
C+I=82
C(5)-I(2)=25
I=82-C
C(5)-(82-C)*2=25.
5C-(164-10C)=25
5C-164+10C=25
15C-164=25
+164 +164
15C=189
c=12.6
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the number of correct solutions
Let = the number of incorrect solutions
--------
and
He solved 27 correctly
------------
Your mistake is the 6th line from the end
should be
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