Samreen and Garima completed a piece of work together in 8 days. If Samreen can complete the same work in 10 days working independently, in how many days will Garima complete the same work alone ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 40
Given that
Samreen can do work alone in 10 days
Samreen and Garima together complete a piece of work in 8 days
Total work = LCM(10, 8) = 40 days
The efficiency of Samreen = 40/10 = 4
The efficiency of Garima and Smareen = 40/8 = 5
So, the efficiency of Garima = 5 - 4 = 1
Hence, Garima can do work alone = 40/1 = 40 days