Evening shift

While working the evening shift, Officer K took 8 hours to complete a task at his workstation, and Officer M took 10 hours to complete the same task at his workstation. How long would it take Officer K and M to complete the same task, each working at his own workstation?

Final Answer:

t =  4.4444 h

Step-by-step explanation:

$t=\frac{1}{\frac{1}{8}+\frac{1}{10}}=\frac{40}{9}\text{h}=4.4444\text{h}$

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