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Producing four machines takes a total of 80 hours. Each machine takes the same amount of time to produce.

How long does it take to produce 1 machine, 2 machines, and 5 machines?

Final Answer:

t₁ =  20 h
t₂ =  40 h
t₅ =  100 h

Step-by-step explanation:

$$\begin{gathered} t_4=80\text{h} \\ {t}_1=t_4/4=80/4=20\text{h} \end{gathered}$$

$t_2=2\cdot t_1=2\cdot 20=40\text{h}$

$t_5=5\cdot t_1=5\cdot 20=100\text{h}$

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