Question

2. If m men can do a job in d days, then the number of days in which m
+ r men can do the job is
(a) dur
(b) (d/m)(m + r)
(c)d/(m + r)
(d) md/(m + r)​

Answer 1

if a men can do a job in d days

number of days in which m+r men can do job

d/(m+r)