Temporary workers

Three temporary workers work in the warehouse and unload the goods in 9 hours. In what time would five temporary workers unload the same products?

Correct answer:

t =  5.4 h

Step-by-step explanation:

$t=3\cdot 9\mathrm{/}5={\displaystyle \frac{27}{5}}={\displaystyle \frac{27}{5}}\text{ h}=5.4\text{ h}$

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