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3 January, 17:42

Edie can paint a wall in 3 hours. Dan can paint the same wall in 6 hours. if they work together, how many hours will it take Edie and Dan to paint the wall?

A.

1 hour

B.

1.5 hours

C.

2 hours

D.

4.5 hours

+3
Answers (2)
  1. 3 January, 18:37
    0
    Eddie can paint 1/3 in an hour

    Dan can paint 1/6 wall in an hour

    2/6 + 1/6 = 1/2

    Together, they can paint 1/2 wall in an hour

    1/2 x 2 = 2

    Therefore they would paint the whole wall in 2 hours, so the answer's C.
  2. 3 January, 21:30
    0
    The answer is C.

    The rest of the answers are

    1. A

    2. B

    3. A

    4. D

    5. B

    6. D

    7. A

    8. B

    9. C

    10. D

    11. C

    12. C
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