The machine

The machine works 7 hours a day and produces 1 part in 5 minutes. How many parts will it produce in 1 hour? How many parts will it produce in 1 day?

Correct result:

n1 =  12
n2 =  84

Solution:

n1=605=12n_{1}=\dfrac{ 60 }{ 5 }=12
n2=n1⋅ 7=12⋅ 7=84n_{2}=n_{1} \cdot \ 7=12 \cdot \ 7=84

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