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

Question

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?

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Maris 1 year 2021-09-02T02:28:39+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-02T02:29:58+00:00

    Answer:

    1 3/8 hours

    Step-by-step explanation:

    0
    2021-09-02T02:30:26+00:00

    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

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )