Question

ram can do a piece of work in 20 days while Shyam can do it in 30 days if both of them work at it together in how many days will they be able to finish the work

solve with step by step explanation

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Answer 1

Answer:

12 days

Step-by-step explanation:

Ram takes 20 days to complete a piece of work.

Shyam takes 30 days to complete a piece of work.

Ram completes (1/20) of a piece of work in 1 day.

Shyam completes (1/30) of a piece of work in 1 day.

Together R and S complete (1/20) + (1/30) = (1/12) of a piece of work in 1 day.

(1/12) of a piece of work - 1 day

(12/12) of a piece of work - (12/12)/(1/12) = 12 days.

R and S take 12 days to complete a piece of work when they work together.