Suppose that I agree to pay you .08 cents for every problem you solve correctly on a test and fine you .05 cents for for every problem that you get wrong. If at the end of 26 problems we do not owe each other any money, how many problems did you get right?

• 10 correct
  let x be correct and y be wrong
  .8x-.5y=0
  x+y=26
  solving above equation we get x=10 and y=16
• 10 years agoHelpfull: Yes(0) No(0)
• let x be correct and y be wrong
  .8x-.5y=0----I
  x+y=26----II
  solving I and II equation we get x=10 and y=16
• 10 years agoHelpfull: Yes(0) No(0)