Question

Gautam and Varun can do a work individually in 21 and 42 days respectively in how many days they can complete the work working alternatively ​

Answer 1

Answer:

28 days

Step-by-step explanation:

Gautam's one day's work =1/21

Varun's one day's work = 1/42

Gautam's and Varun's two days work(working alternatively) = (1/21) + (1/42) = 1/14

So, Gautam and Varun do 1/14 work in 2 days

So, they complete the work in 14 x 2 = 28 days.