Lumberjacks

Fifteen lumberjacks would take 12 days to destroy the broken trees. How many days would this work require if 5 workers added to it after 4 days?

Correct answer:

t =  10

Step-by-step explanation:


15•12 = 15•4+(5+15)•(t-4)

20t = 200

t = 10

Our simple equation calculator calculates it.



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