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OLga [1]
3 years ago
13

Working together, Jacob and Kristin can

Mathematics
1 answer:
Wewaii [24]3 years ago
6 0

Answer:

  15 minutes

Step-by-step explanation:

Their rate together is 1/6 floor per minute.

Her rate alone is 1/10 floor per minute.

His rate is the difference of these:

  1/6 - 1/10 = 5/30 -3/30 = 2/30 = 1/15 . . . . floor per minute

It would take Jacob 15 minutes to do it alone.

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