Amit can complete a piece of work in 4 days and Raju can complete the same in 6 days. How long will they take, if both Amit and Raju work together?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. .
LCM of 4 and 6 = 12 units (Assume total work = 12 units)
Amit’s efficiency = 12/4 = 3 units/day
Raju’s efficiency = 12/6 = 2 units/day
Together: 3 + 2 = 5 units/day
Time = 12/5 = days