PLEASE SOLVE FORMULA IN PICTURE
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The answer is 38hours 20 minutes.
Note: This is a terrible answer, because it doesn't explain how you get 38.33 hours. You deserve a complete, detailed explanation. I wish I could send it to you somehow.
I wrote a complete step-by-step solution it ! But Brainly kept telling me that it had either a link or some nasty words in it, and would not let me post it. I tried changing words 3 times, but Brainly still would not accept it.
I do not have time to play a guessing game with Brainly, so I just had to delete the whole step-by-step explanation.