Multiple choice

A and B can separately do a piece of work in 12 days and 24 days respectively. How long will they together take to do the work.

  1. 14 days

  2. 12 days

  3. 10 days

  4. 8 days

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

A's work rate is 1/12 of the work per day, and B's rate is 1/24 per day. Together, their combined rate is 1/12 + 1/24 = 3/24 = 1/8 of the work per day. Therefore, working together they will complete the entire work in 8 days. The other options don't match this calculation.