Questions from Mathematics
Q : A and B can separately finish a piece of work in 20 days and 15 days respectively. They worked together for 6 days, after which B was replaced by C. If the work was finished in next 4 days, then the number of days in which C alone could do the work is
A) 40 days
B) 60 days
C) 30 days
D) 50 days
