Answer:
The associative property of multiplication
Step-by-step explanation:
This property states that you can add or multiply regardless of how the numbers are grouped or how you use parenthesis. This means that if you are adding or multiplying, it doesn't matter where you put the parentheses.
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This means that...
the first worker does 1/8 of the job each hour.
the second worker does 1/4 of the job each hour.
the third worker does 1/4 of the job each hour.
So together they get 1/8+1/4+1/4 of the job done per hour.
Rate: 5/8 of the job per hour
Now if we know the rate, the job will be finished in...
1/(5/8) hours ----> 1.6 hours or 1 hour and 36 minutes
answer: 1.6 hours or 1 hour and 36 minutes
Answer:
4/15 didnt i think
Step-by-step explanation: