Using the together rate, it is found that they would have finished the task in 8 days working together.
It is the sum of each separate rate.
In this problem, the rates are given as follows:
Then, the together rate is given by:
[tex]\frac{1}{x} = \frac{1}{10} + \frac{1}{40}[/tex]
[tex]\frac{1}{x} = \frac{4 + 1}{40}[/tex]
5x = 40
x = 8
They would have finished the task in 8 days working together.
More can be learned about the together rate at https://brainly.com/question/25159431
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