Question

A can do certain work in a same time in which b and c together to do it . a and c together could do it in 10 days and c alone in 50 days .then b alone could do it how many day

Answer 1

A and C can do a piece of work  = 10 days
One day work of A and C            = 1/10 =0.10
C alone can do a piece of work   = 50 days
One day work of C                       = 1/50 =0.02
One day work of A                       =  0.10-0.02
                                                     =  0.08
One day work of B and C            =  One day work of A
                                                     =  0.08
One day work of B                        =  0.08-0.02
                                                      =  0.06
                                                      =  3/50
B alone can do a piece of work     =   50/3 days
                                                       =  16.67 days