Question

10. A and B together can fill a ditch in 12 days. A alone can fill it in 20 days. If B does the work for only half-a-
day daily, how long shall it take A and B together to fill the ditch?
(D) 20 days
(C) 15 days
(B) 10 days
(A) 11 days​

Answer 1

Answer:

10

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2

5

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1 I have doubt

Step-by-step explanation:

Please mark me as brainlest