Multiple choice

A can do a piece of work in 2 days , B can do in 4 days. In how many days they will complete the work if they work together ?

  1. 96

  2. 27

  3. 42

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
AI explanation

The total work is calculated using the least common multiple of the days taken by A and B, which is 4 units. A's daily efficiency is 2 units per day, and B's daily efficiency is 1 unit per day. Working together, their combined daily efficiency is 3 units per day. Dividing the total work of 4 units by their combined efficiency gives a completion time of 4/3 days. Since 4/3 days is not among the listed numerical options, None of these is the correct result.

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