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Need help with Total Profit Calculation

I have a table from my Economics class in which we have to calculate TR, MR, Total Profit and determine the maximizing output. I am good on everything but the Total Proft. I would think it would just be revenue - cost, but the figures don't add up on the row he gave us with definitive answers. Below is the row I mentioned that I know is correct. I need help with determining how the TOTAL PROFIT column was calculated.
Thanks in advance!

Qty: 10
Price: $12
Total Revenue: $120
Marginal Revenue: $12
Marginal Cost: $8
Total Profit: $25

(edited 5 years ago)

Reply 1

Speckle

From that information I would have said Total Profit = 40. Does the question also talk about fixed costs somewhere?