SOLUTION: Suppose that i will pay you 8cents for every problem in this chapter that you solve correctly but you have to pay me 5cents for every problem done incorrectly. If at the end of the
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Question 288364: Suppose that i will pay you 8cents for every problem in this chapter that you solve correctly but you have to pay me 5cents for every problem done incorrectly. If at the end of the 26 problems neither of us owe each other any money, how many problems did you solve correctly?
You can put this solution on YOUR website! 8x=5(26-x)
8x=130-5x
8x+5x=130
13x=130
x=130/13
x=10 questions answered correctly.
26-10=16 answered incorrectly.
Proof:
8*10=5*16
80=80
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