Part-time 6476

Specify x - the number of hours if

Three part-time workers, 5 hours a day, plant 900 trees.
How many hours a day do two part-time workers have to work to plant 480 trees?

Correct answer:

h =  4

Step-by-step explanation:

$$\begin{gathered} h_1=900/(3\cdot 5)=60 \\ h=480/(2\cdot h_1)=480/(2\cdot 60)=4 \end{gathered}$$

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