Wood

Peter chops wood. If they cut down a half hour a day, he ended work in 9 days. But Peter needs to end work three days earlier. How many minutes should a day cut down?

Correct answer:

x =  45 m

Step-by-step explanation:


9·30=(9-3)x

9·30=(9-3)·x

6x = 270


x = 270/6 = 45

x = 45

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