A and B working together can finish a piece of work in 8 days while B alone can do it in 24 days. In how many days can A alone finish the work?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 12.
Given:
A and B working together can finish a piece of work in 8 days
B alone can do it in 24 days
Calculations:
Total work (LCM of 8, 24) = 24 units
The efficiency of A and B = 24/8 = 3
Efficiency of B = 24/24 = 1
So, the efficiency of A = 3 - 1 = 2
Hence, Required time taken by A = 24/2 = 12 days