## Money For Answers

A dad offered to pay his son $5 for every correct answer on his math test. His son said he would pay his Dad $8 for every incorrect answer. There were 26 questions on the test and no money was exchanged.

How did this happen?

The son got 16 questions correct and missed 10. This means he owed his Dad 10 * $8 = $80, but his Dad owed him 16 * $5 = $80, so it was a wash.

Two math equations to solve it are x + y = 26 and 5x = 8y.

Posted in Brain Teasers

3 Comments on "Money For Answers"monica baggs says

February 12, 2015 @ 20:30

Or he could have not took the test

Script says

March 28, 2015 @ 10:58

the son got 16 correct answers with 10 incorrect answers

homer says

April 25, 2016 @ 20:27

son got 16 correct answers in the test and 10 incorrect answer

16 x 5 = 80

10 x 8 = 80

therefore no money exchanged

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