Answer: The time taken by both of them if they work together is given by

Step-by-step explanation:
Since we have given that
Time taken by Blake to paint one room = 9 hours
Time taken by Ned to paint one room = 6 hours
Work done by Blake = 
Work done by Ned = 
Total work done by both of them together is given by

So, the time taken by both of them if they work together is given by

Answer C. The pattern is that each number in sequence 1 is being doubled to get the number in sequence 2, and 40*2=80
Simple just subtract and u get-74.85
Answer:
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=7x + 22
Answer:
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Step-by-step explanation: