Multiple choice

A can do a job in 2 days, and B can do the same job in 2 days. How long will it take if they work together?

  1. 7 DAY

  2. 2 DAY

  3. 4 DAY

  4. 1 DAY

  5. 5 DAY

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

If A takes 2 days and B takes 2 days, their combined rate is 1/2 + 1/2 = 1 job per day. Thus, they take 1 day to finish.

AI explanation

Using the Time and Work formula for working together, A and B will take the product of their individual times divided by the sum of their individual times. This gives (2 multiplied by 2) divided by (2 plus 2), which equals 4 divided by 4. The result is 1 day.