WBCS.LIVE practice question

P and Q can do a piece of work in 20 days and 12 days respectively. P started the work alone and after 4 days. Q joined them till the completion of the work. How long did the work last?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 10 days
  2. 20 days
  3. 15 days
  4. 6 days

Correct answer and explanation

Correct answer: 10 days