Multiple choice

Ram can do a piece of work in 20 days and Mohan can do the same work in 30 days. Find the number of days in which the total work is completed if they work together?

  1. 18 days

  2. 12 days

  3. 14 days

  4. 16 days

  5. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ram's rate = 1/20 work per day, Mohan's rate = 1/30 work per day. Combined rate = 1/20 + 1/30 = 5/60 = 1/12. Therefore, working together they complete the work in 12 days.