Using the together rate, it is found that it will take 18 hours for Erick to build the garden box himself.
What is the together rate?
The together rate is given by the sum of each separate rate.
In this problem, the rates are given as follows:
Hence:
[tex]\frac{1}{x} + \frac{2}{x} = \frac{1}{6}[/tex]
[tex]\frac{3}{x} = \frac{1}{6}[/tex]
x = 18.
Hence, it will take 18 hours for Erick to build the garden box himself.
More can be learned about the together rate at https://brainly.com/question/25159431
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