Answer: 18/5 hours, or 3.6 hours
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Work Shown:
x = amount of time it takes Blake to do the job by himself
y = amount of time it takes Ned to do the job by himself
z = time it takes if they worked together
In this case,
x = 9 and y = 6
Use those values to find z.

Answer:
This makes no sense pls repeat the question
Step-by-step explanation:
123-67=56 points. So, subtract and you get 56 points in the second half