SOLUTION: Write a convinceing argument: solve the problem below. Then write an argument that would convince a classmate that your answer is correct. John was hired by a painter to paint d

Question 1078983: Write a convinceing argument: solve the problem below. Then write an argument that would convince a classmate that your answer is correct.
John was hired by a painter to paint doors. He was paied $10 for each door that he completed that did not need repainting by a painter. For each door that needed to be re-done, he was fined $5. On a bd day he painted 25 doors, but made a totaly of only $10. How many doors did he paint that did not need to be repainted?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let =the number of doors he painted
that did not need to be repainted
= the number of doors that needed
to be repainted
---------------------
is what he was paid for doors that
did not need repainting
is what he was paid ( fined )
for doors needing repainting
-------------------------------------------

He painted 9 doors that did not need repainting
----------------------------------------------
check:

OK
You just need to explain
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