Multiple choice

A and B can do a piece of work in 4 days and 6 days respectively. What is the number of days required to complete the work when both work together?

  1. 2.3

  2. 2.1

  3. 10/24

  4. 2.4

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A's 1 day work = 1/4 B's 1 day work = 1/6 (A + B)'s 1 day work = (1/6 + 1/4) = 10/24 Therefore, required number of days = 24/10 = 2.4

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