Question

How many days will A and B take to complete the job if A can do the job in 12 days and B can do the same job in 6 days?

Answer 1

Hence A alone will complete the work in 21 days. A and B can finish the work in 12 days. B can finish it in 28 days. Hence A can do the work alone in = 1/(1/12 - 1/28 ) = 84/(7 -3 ) = 21 days.

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Answer 2

Answer:

the answer is 4 days

Step-by-step explanation:

step and step by solution is in above image

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