Patty and Mike are installing new floors in their house. Working alone, Mike can complete the floor in 10 hours. Patty can complete the same floor in 8 hours if working alone. How long will it take them, working together, to finish the floor?

Question

Round your answer to the nearest hundredth if necessary.
(1 point)
• 9 hours
• 0.23 hours
• 4.44 hours
• 18 hours

Answer 1

To calculate how long it will take them to finish the floor working together, we can use the formula:

1/t = 1/10 + 1/8

1/t = 0.1 + 0.125

1/t = 0.225

t = 1/0.225

t = 4.44 hours

Therefore, it will take them approximately 4.44 hours to finish the floor working together.

So, the answer is:
• 4.44 hours