Question

one man can do a piece of work in 3 hours; another can do the same piece of work in 2 hours. How long will they take if they work together? ​

Answer 1

Answer:

1st man 1-hour work = 1/3

    2nd man 1-hour work = 1/2

     If they work together then it will be = 1/3 + 1/2

                                                                = 1/6.

So, both will finish work in 6 hrs