Solve the problem.Martha can rake the leaves in her yard in 2 hours. Her younger brother can do the job in 6 hours. How long will it take them to do the job if they work together?
A. 6 hr
B. 3 hr
C. 
hr
D. 
hr
Answer: D
Mathematics
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 figure 2.png)
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Find the sum.58.34 + 8.668 + 5.724 + 6.44
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