Question

6. A and B can complete a work in 20 days and 15 days
respectively. A alone start doing the work. After 5 days B
also joins. In how many days will the work be completed ?
(a) 3 days
(b) 5 days
(c) 6 days
(d) 8 days​

Answer 1

Answer:

5 multiply by 3 for B

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:d