SOLUTION: how long would it take four machines to dig a hole 40 meters long, 20 meters wide, and 10 meters deep

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Question 865438: how long would it take four machines to dig a hole 40 meters long, 20 meters wide, and 10 meters deep
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
depends on the rate of each machine