Anand can construct a wall in 4 days, while Rajan can complete the same work in 7 days. In how many days will Anand and Rajan construct the wall if they work together?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. .
LCM(4, and 7) = 28
The efficiency of Anand = 28/4 = 7 units
The efficiency of Rajan = 28/7 = 4 unit
Time = = days