Question

Mohan and Sohan can dig a gap in 12 days in 10 days, respectively. If they do the job as follows. Mohan on the first day and Sohan on the second day, then Mohan on the third day and so on, how many days will the ditch go? .

Answer 1

Quantity of work mohan can do in one day =1/12

Quantity of work sohan can do in one day=1/10

Quantity of work both can do in two days one after another=1/12 +1/10= 11/60

Let total number of two days work be x

So, 11/60 *x=1

=> x= 5.4545

so total number of days =5.4545*2 = 10.909 days