Masum can do a job in 2 hours. Hashem can do the same job in 3 hours. If they work together , how many hours will it take to do the job?
A
115
B
6
C
3
D
123
Correct Answer: 115
Masum & hashem do together in 1 hour (1/2 + 1/3) = 5/6 part of work 5/6 part do in 1 hour So 1 part do in 6/5 = 1 1/5 hour