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Solve.
Martha can rake the leaves in her yard in 3 hours. Her younger brother can do the job in 4 hours. How long will it take them to do
the job if they work together?

Respuesta :

bessiedyer79

Answer:

3.5 hours

Step-by-step explanation:

all u have to do is add 3+4=7 then 7 divided by 2 which equals 3.5

toomuchdog9

Answer:

1 3/8 hours

Step-by-step explanation:

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