Seven workers

Seven workers clear the glade in 22 hours. How many workers would need to be done in 8 hours?

Correct result:

n =  20

Solution:

n1=7 22/8=774=19.25 n=n1=19.25=20n_{1}=7 \cdot \ 22/8=\dfrac{ 77 }{ 4 }=19.25 \ \\ n=\lceil n_{1} \rceil=\lceil 19.25 \rceil=20



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