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Karen and Benjamin are ecologists studying forest regeneration. Working together, it takes them 1 hour to count the seedlings in half of the research area. Working alone for 1 hour, Karen can count the seedlings in 1/8 of the research area. 

 

How long would it take for Bejmamin to count the seedlings on his own? Give the anser in 1 decimal place is necessary.

 Dec 17, 2021
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Karen takes 8 hours to count all of the seedlings by herself  

 

together it takes 2 hours    ( 1 hour per half)

 

1/8  + 1/B  = 1/2       Solve for B

B = 8/3 hr

 Dec 17, 2021

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