SOLUTION: For 9 months a company lost $600/month and for the last 3 months made a profit of $1,200/ month. What was the average monthly profit or ,oss for this company?

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Question 718160: For 9 months a company lost $600/month and for the last 3 months made a profit of $1,200/ month. What was the average monthly profit or ,oss for this company?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
For 9 months the loss was 600 per month 9(-600).
For the next 3 months the gain was 1,200 per month 3(1,200).
To find the average over 12 months you need to divide by 12
[9(-600)+3(1,200)]/12
(-5,400+3,600)/12
-1,800/12=$-1,500 LOSS PER AVERAGE MONTH.
HOPE THIS HELPS EXPLAIN THE PROCESS.