Question

Rama can do a piece of work in 30 days while syam take 20 days but shyam leaves after 3 days And then remaining work Rama completed how many days

Answer 1

Answer:

Step-by-step explanation:

Ram takes 20 days to do one bit of work. So, he is working at a rate of 1/20 of work per day.

Shyam takes 30 days to do one bit of work. So, he is working at a rate of 1/30 of work per day.

Together, both are completing 1/20 and 1/30 of the work. 1/20 + 1/30= 5/60 = 1/12 (cross multiplication method).

Therefore, their rate together is 1/12 of the work per day. So, it will take them 12 days in total.